Rhubarb Custard Pie - Kemps

Ingredients

• 1/4 cup Kemps butter
• 1/2 cup creamy peanut butter
• 2 tablespoons Kemps milk
• 1 1/2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/4 teaspoon salt
• 2 large eggs
• 1 cup brown sugar
• 1 teaspoon vanilla extract
• 16 mini peanut butter cups