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This easy Clams Casino recipe is a classic seafood appetizer made with tender chopped clams, crispy bacon, and a flavorful breadcrumb stuffing baked right in the clam shells. It’s buttery, a little crispy, and perfect for holidays, parties, or anytime you’re craving a restaurant-style appetizer at home.

Table of Contents
- Kellie’s Note All In on Clams Casino
- Why You’ll Love My Clams Casino
- Ingredients for Clams Casino
- How to Make Clams Casino
- How to Clean Clams for Clams Casino
- Kellie’s Tips for the best Clams Casino
- Clams Casino Variations
- Make Ahead, Storage and Reheating
- What to Serve with Clams Casino
- More Easy Seafood Recipes
- The Best Clams Casino Recipe
Why You’ll Love My Clams Casino
- Tender clams in every bite. Chopping the clam meat before mixing it into the stuffing makes these much easier to eat than traditional versions with whole clams.
- So much flavor. Smoky bacon, garlic, Parmesan, lemon zest, and fresh herbs make the stuffing ridiculously delicious.
- Crispy, golden topping. Panko breadcrumbs give the filling a light texture that’s not too dense or heavy.
- Perfect for entertaining. These baked clams look fancy enough for a holiday party but are simple enough to make for a weekend seafood feast.
- Easy to make ahead. Assemble them in advance and bake just before serving. One less thing to worry about when you’re hosting!
Ingredients for Clams Casino
You only need a handful of simple ingredients to make this restaurant-style Clams Casino recipe at home.
- Fresh Clams – I like using littleneck or cherrystone clams. Littlenecks are smaller and perfect for bite-sized appetizers, while cherrystones have slightly larger shells that hold more stuffing.
- Bacon – Thick-cut bacon adds that classic smoky, savory flavor. Regular bacon works, too, and you can swap in pancetta for something a little different.
- Onion – Finely chopped onion adds sweetness and flavor to the stuffing. Shallots make a great substitute.
- Red Bell Pepper – Adds a little sweetness and color. Yellow or orange bell pepper works just as well.
- Garlic – Fresh minced garlic gives the best flavor, but jarred minced garlic will work in a pinch.
- Panko Breadcrumbs – My favorite for a light, crispy stuffing. Regular breadcrumbs work, but the texture will be a little more compact.
- Parmesan Cheese – Freshly grated Parmesan adds savory flavor. Pecorino Romano is another good option, although it’s saltier.
- Italian Seasoning – A simple way to add classic Italian herb flavor. You can also use a combination of dried oregano, basil, and thyme or my homemade italian seasoning.
- Lemon Zest – Adds a fresh, bright flavor that balances the richness of the bacon. Fresh lemon is best.
- Fresh Parsley – A little freshness and color. Flat-leaf parsley is my favorite.
- Olive Oil – A drizzle over the stuffed clams helps the topping turn golden and crispy.
- Salt and Pepper – Season to taste, keeping in mind that clams, bacon, and Parmesan already contribute salt.
For the complete ingredient list and measurements, scroll down to the recipe card.

How to Make Clams Casino
This easy Clams Casino recipe comes together in a few simple steps. The secret is cooking the clams just until they open, then mixing the chopped clam meat into the flavorful stuffing.
- Prepare the clams. Scrub the clams under cold running water to remove any sand or grit. Arrange on a rimmed baking sheet and cook in the oven until the shells open. Discard any that don’t open after adequate cooking.
- Chop the clams. Once cool enough to handle, remove the clam meat and roughly chop it. Save 24 shell halves for stuffing.
- Cook the bacon and vegetables. Cook the chopped bacon until almost crisp, then remove it from the skillet. Add the onion and bell pepper to the bacon drippings and cook until softened. Stir in the garlic and Italian seasoning.
- Make the stuffing. Remove the pan from the heat and stir in the chopped clams, panko breadcrumbs, Parmesan cheese, lemon zest, and parsley. Season to taste.
- Stuff the shells. Spoon the clam stuffing into the reserved shells, top each with a piece of bacon, and drizzle lightly with olive oil.
- Bake and serve. Bake until the filling is heated through and the tops are golden brown. Finish with a little extra parsley and Parmesan, if desired, and serve warm with lemon wedges.
The complete instructions, including oven temperatures and baking times, are in the recipe card below.
How to Clean Clams for Clams Casino
Nobody wants a bite of sand with their Clams Casino! Taking a few extra minutes to clean your clams makes a big difference.
- Choose fresh clams. Look for shells that are tightly closed and free from cracks or damage. If a clam is slightly open, give it a gentle tap. It should close. Discard clams that stay open or have broken shells.
- Scrub the shells. Rinse the clams under cold running water and scrub away any sand or debris.
- Remove excess sand. If needed, soak the live clams in cold saltwater prepared for purging clams, following your fishmonger’s recommendations. Lift them out of the water instead of pouring everything into a colander, which can dump sand right back onto the shells.
- Cook until they open. Keep an eye on the clams as they cook and remove them as they open to help prevent overcooking.
- Save the shells. Once the clams are cool enough to handle, remove the meat and set aside 24 clean shell halves for stuffing.
If your clams are already clean and purged when you buy them, you may not need an additional soak. Ask your fishmonger if you’re unsure.

Kellie’s Tips for the best Clams Casino
- Don’t overcook the clams. They’re going back into the oven after stuffing, so the goal is to open them without cooking them any longer than necessary.
- Chop, don’t mince. Roughly chopping the clam meat keeps a nice texture while making the stuffing tender and easy to eat.
- Don’t overdo the breadcrumbs. You want a flavorful clam stuffing, not a mouthful of dry breadcrumbs.
- Keep the vegetables small. Finely chopped onions and peppers blend into the stuffing without overpowering the clams.
- Watch the oven. The topping can go from beautifully golden to too brown pretty quickly, especially at a higher temperature.
- Season carefully. Bacon, Parmesan, and fresh clams all bring salt to the party. Taste the stuffing before adding extra seasoning.
- Serve them warm. Clams Casino are at their best fresh from the oven with a squeeze of lemon.
Clams Casino Variations
I love this Clams Casino recipe exactly as it is, but there are a few easy ways to change things up.
- Spicy Clams Casino – Replace some of the red bell pepper with finely chopped hot peppers or add a pinch of crushed red pepper flakes. A reader tried hot peppers in this recipe and loved the results!
- Extra Herby – Add a little fresh oregano or thyme to the stuffing for more herb flavor.
- Different Breadcrumbs – Swap the panko for regular breadcrumbs if that’s what you have on hand. The filling will be a little denser.
- With Pancetta – Use diced pancetta instead of bacon for a slightly different savory flavor.
- With Canned Clams – A 6.5-ounce can of chopped clams is an option if you don’t have access to fresh clams. You’ll need clean, food-safe clam shells for stuffing, and the texture and yield may differ from the fresh version.

Make Ahead, Storage and Reheating
- Make Ahead: Clams Casino are one of my favorite appetizers for entertaining because you can get most of the work done before your guests arrive. Assemble the stuffed clams up to 24 hours ahead and refrigerate them in an airtight container. Bake just before serving.
- Storing Leftovers: Refrigerate leftover cooked Clams Casino promptly in a covered, airtight container. I recommend enjoying them within 1–2 days for the best flavor and texture.
- Reheating: Arrange the leftover clams on a baking sheet and reheat in a 350°F oven until heated all the way through. Avoid overheating, which can make the clams tough. For food safety, leftovers should reach 165°F.
- Freezing: I prefer making these fresh or assembling them the day before serving. Freezing can affect the texture of the clams and make the breadcrumb stuffing softer once thawed. For the best results, stick with the refrigerated make-ahead method.
What to Serve with Clams Casino
Clams Casino are one of those appetizers that feel right at home at a fancy holiday dinner or a casual summer party.
I especially love making them for Christmas Eve, when we’re putting together a seafood feast, but they’re also perfect for New Year’s Eve, dinner parties, and special occasions.
Serve them with plenty of fresh lemon wedges, Cocktail Sauce Recipe and a few other seafood favorites like my Garlic Roasted Shrimp Cocktail, Maryland Crab Cakes, or Cheesy Baked Crab Dip.
If you’re serving them before dinner, keep the rest of the meal simple. A crisp green salad, pasta, or a seafood main dish pairs beautifully with these buttery, savory little bites.
And if you’re hosting a party, plan on about 3–4 Clams Casino per person when you’re serving several appetizers. I usually make extra because they disappear pretty quickly!
More Easy Seafood Recipes
If you love seafood appetizers as much as I do, you’ll definitely want to try a few more of my favorites!
- Baked Shrimp Scampi – Buttery, garlicky shrimp baked with a golden breadcrumb topping. So easy and perfect for entertaining!
- Easy Lobster Bisque – Rich, creamy, and surprisingly simple to make at home.
- New England Clam Chowder – A creamy, comforting classic loaded with tender clams and potatoes.
- Baked Lobster Tails – An elegant seafood dinner that’s easier to make than you’d think.
- Cajun Seafood Boil – A fun, flavor-packed seafood feast with shrimp, crab, clams, and a delicious buttery sauce.
- Grilled Seafood Paella – A showstopping seafood dinner that’s perfect for a special occasion.
If you try this Clams Casino recipe, I’d love to hear how it turned out! Leave a comment and a star rating below. Your feedback helps other readers, too!
The Best Clams Casino Recipe

Equipment
- 1 baking sheet
- large skillet
- chef's knife
- cutting board
- slotted spoon
Ingredients
- 24 littleneck or cherrystone clams
- 4 slices thick cut bacon, cut into 1/4 inch pieces
- 1/2 cup finely chopped onion
- 1/2 cup finely chopped red bell pepper
- 2 cloves garlic, minced
- 1 tbsp italian seasoning
- 1 cup panko bread crumbs
- 3 tbsp freshly grated parmesan cheese
- 1 tbsp lemon zest
- 1 tbsp chopped fresh parsley
- 2 tbsp olive oil
- kosher salt, to taste
- fresh ground black pepper, to taste
Instructions
- Preheat the oven to 350°F. Scrub the clams under cold running water to remove any sand or grit. Arrange them on a rimmed baking sheet in a single layer. Roast until the shells open, checking after 4–5 minutes and continuing as needed. Remove clams as they open. Discard any that remain closed after adequate cooking.
- Allow the clams to cool until safe to handle. Remove the clam meat and roughly chop it. Reserve 24 clean clam shell halves for stuffing.
- In a large skillet over medium heat, cook the bacon until almost crisp. Transfer to a plate with a slotted spoon, leaving the drippings in the skillet.
- Add the onion and red bell pepper to the skillet. Cook until softened, approximately 3 minutes. Stir in the garlic and cook for 1 minute more. Add the Italian seasoning.
- Remove the skillet from the heat. Add the panko breadcrumbs, Parmesan cheese, lemon zest, parsley, and chopped clams. Toss gently to combine. Season with salt and pepper to taste.
- Increase the oven temperature to 450°F. Spoon approximately 1 tablespoon of stuffing into each reserved clam shell. Arrange on a baking sheet, stuffing side up. Top each with a piece of bacon and drizzle with olive oil.
- Once the oven reaches 450°F, bake for approximately 5 minutes, until the topping is golden brown and the filling is thoroughly heated. Garnish with additional Parmesan and parsley, if desired. Serve immediately with lemon wedges.
Video
Notes
- Yield: Makes 24 stuffed clam half-shells, approximately 6–8 appetizer servings.
- Clam Selection: Littleneck clams make smaller appetizers; cherrystone clams provide larger shells for stuffing.
- Cleaning: Scrub the clams thoroughly before cooking. If they need purging, follow your fishmonger’s instructions for a cold saltwater soak.
- Make Ahead: Assemble Clams Casino up to 24 hours in advance and refrigerate in an airtight container. Bake just before serving.
- Storage: Refrigerate cooked leftovers promptly in an airtight container for up to 1–2 days for best quality.
- Reheating: Reheat in a 350°F oven until thoroughly heated to 165°F.
- Freezing: Not recommended for the best texture. Refrigerated make-ahead preparation is preferred.
- Substitutions: Shallots can replace onion, regular breadcrumbs can replace panko, and pancetta can replace bacon. Adjust seasoning as needed.
- Troubleshooting: Avoid overcooking the clams or adding too much stuffing, which can affect tenderness and texture.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
















Does this make enough for all 48 half shells or makes 24 halve and discard 24 halves?
It makes only enough for 24 shells.
This is by far the best clams casino recipe ever. Delicious.
I used hot peppers vs bell peppers and added a few tablespoons of the clam juice to the mixture and each cooked up beautifully.
Love the addition of hot peppers! I’m so happy you liked it.
I want to use canned chopped clams. How much should I use for this recipe?
You should be good with a 6.5 ounce can of chopped clams.
This recipe for The Best Baked Clams Casino, though it looks quite tasty, needs to be moved out of the Vegetarian section.
Well, some vegetarians eat seafood….I will definitely fix this. Thank you for letting me know.
Can these be made ahead and froze. Before the baking of course.
Yes, you can definitely make in advance and freeze. No need to thaw before baking, just bake a little longer to ensure they’re cooked through.
Great flavor and relatively easy. Thank you for the instruction.
Thank you! I’m happy you enjoyed them!