Peanut Butter Cup Cupcakes

Ingredients

• 1/3 cup shortening
• 1/3 cup peanut butter
• 1 1/4 cups brown sugar (packed)
• 2 eggs
• 1 tsp vanilla extract
• 1 3/4 cups all-purpose flour
• 1 3/4 tsp baking powder
• 1 tsp salt
• 1 cup milk
• 16 miniature peanut butter cups