Peanut Butter Mississippi Mud Blondies

Ingredients (16)

• 1/4 Cup Butter
• 1 Cup Brown Sugar
• 1/4 Cup Peanut Butter
• 1 Large Egg
• 2 Teaspoons Vanilla
• 1 Cup Flour
• 1/2 Teaspoon Baking Powder
• 1/4 Teaspoon Salt
• 1/2 Cup Peanut Butter Chips
• 2 Cups Mini Marshmallows
• Frosting:
• 1/4 Cup Butter
• 3 Tablespoons Cocoa Powder
• 2 Cups Powdered Sugar
• 1/4 Cup plus 2 Tablespoons Heavy Cream
• 1/4 Teaspoon Vanilla