Preheat oven to 350 degrees.
In a large mixing bowl combine brown sugar, sugar & butter.
Crack an egg & add vanilla.
Sprinkle in baking soda.
Slowly add flour.
Stir in chocolate chips & M&M’s.
Make into tablespoon sized balls and place on a nonstick pan or a parchment paper lined pan. Use a spoon to slightly flatten.
Bake for 10-12 minutes.
Remove from oven. Place on cooking rack.
Once cookies have cooled, spread frosting on the inside of every other cookie.
Place a cookie on top to make a cookie sandwich.
M&M the edges.
Serve & enjoy.
Calories: 644kcal | Carbohydrates: 92g | Protein: 6g | Fat: 28g | Saturated Fat: 15g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 6g | Trans Fat: 1g | Cholesterol: 72mg | Sodium: 326mg | Potassium: 75mg | Fiber: 2g | Sugar: 65g | Vitamin A: 568IU | Vitamin C: 1mg | Calcium: 51mg | Iron: 2mg