Here are a few of the mix-in options we use most often:
Blueberry - add 2 cups fresh or frozen berries
Strawberry - add 2 cups fresh or frozen chopped berries
Mixed berries - add 2 cups combo of fresh or frozen chopped berries
Lemon Poppy Seed - add 2 pkgs (3.4oz) lemon flavor instant pudding, 2 tablespoons poppy seeds, omit 1 cup water and replace with 1 cup lemon juice
Pumpkin - add 2 cups solid pack pumpkin and 1 tablespoon pumpkin pie spice (add 1/2 cup chopped nuts if desired)
Cream Cheese topping - mix 2 8oz pkgs softened cream cheese with 1/2 cup sugar and 2 eggs, then drop by rounded tablespoon onto top of each muffin before baking
Nutrition information provided as an estimate only.