Heart Healthy Peanut Butter and Jelly Muffins

Ingredients

• 1 1/4 cups skim milk
• 1/3 cup reduced-fat creamy peanut butter
• 1 egg
• 2 Tbsp unsalted butter, melted
• 1 tsp vanilla extract
• 1 cup whole wheat flour
• 3/4 cup all-purpose flour
• 1/4 cup granulated sugar
• 1/4 cup packed dark brown sugar
• 1 Tbsp baking powder
• 1/2 tsp salt
• 1/4 cup grape jam