Whisk together all ingredients in a large bowl and store in an airtight container until ready to use. (If there are clumps of brown sugar you can break them apart with your fingers.)
To make the pancakes
In a large bowl, whisk together 1 egg, 1 cup of milk and 2 tablespoons melted butter until blended. Stir in 1 cup pancake mix until blended but still has some lumps.
Heat 1 tablespoon butter in a large griddle over medium heat.
Gently ladle pancake batter onto griddle. Cook the pancakes until bubbles begin to form and the edges look dry.
Flip the pancakes over and cook for an additional 2-3 minutes.
Serve immediately or transfer to a platter covered with foil to keep warm.
Video
Notes
Pancake mix can be stored in an airtight container in the pantry for up to 6 months.