Preheat oven to 375 degrees F.
Add the crab meat, red pepper, onion, mozzarella cheese and Old Bay Seasoning to a bowl. Mix together.
In a separate bowl add the Bisquick Heart Smart, skim milk and eggs. Whisk together.
Spray a muffin pan with cooking spray. Add a tablespoon of the Bisquick mixture to the bottom of each muffin.
Add 1/4 cup of the crab mixture to each muffin. Top each one with a little less than a tablespoon of the Bisquick mixture.
Bake for 25 minutes, or until the muffins are golden brown and cooked through.