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4.50 from 6 votes

Easy Neapolitan Sandwich Cookies made with a Cake Mix

A vanilla cake mix is transformed into a Neapolitan Sandwich Cookie, complete with homemade Strawberry Buttercream.
Prep Time10 minutes
Cook Time45 minutes
Total Time50 minutes
Course: Dessert
Cuisine: American
Servings: 12 cookies
Calories: 426kcal

Ingredients

Cookies

  • 1 box vanilla cake mix {15.25 ounces}
  • ½ cup butter {softened}
  • 4 egg whites
  • ¼ cup sour cream
  • 2 Tablespoons cocoa

Strawberry Buttercream

  • ½ cup butter {softened}
  • 2 ¼ cups powdered sugar
  • cup strawberry jam

Instructions

Cookies

  • In a medium bowl combine cake mix, butter, eggs and sour cream. Using a hand held mixer {stand mixer or mix by hand}, mix the ingredients until just combined. There may be small bits of butter in the dough.
  • Divide the dough in half and add 2 tablespoons of cocoa powder to one half of the dough. Mix to make sure that the cocoa powder is completely dissolved into the dough.
  • Use a medium cookie scoop to scoop 12 vanilla and 12 chocolate cookies onto a parchment lined baking sheet and refrigerate for one hour.
  • Preheat the oven to 350°.
  • After one hour, roll the cookie dough mounds in your hand until smooth. Place the 8-10 cookie dough balls onto a silicone mat {or parchment lined baking sheet} and bake for 9-11 minutes or until set. Remove from the oven and allow the cookies to cool on the baking sheet for 5 minutes before moving to a cooling rack. Continue until all of the cookies are baked.

Strawberry Buttercream & Assembly

  • Once the cookies are cool, add the strawberry buttercream ingredients into a large bowl. Mix using a hand held mixer until the frosting is creamy and smooth. Put the frosting into a piping {or zipper} bag and pipe frosting on the top {which is really the bottom of half of the cookies}.
  • Place another cookie on top of the strawberry buttercream, making sure that each cookie has one chocolate and one vanilla cookie. Serve or store in an airtight container in the refrigerator for 4-5 days. The cookies can also be frozen for up to 3 months.

Nutrition

Serving: 1cookie | Calories: 426kcal | Carbohydrates: 65g | Protein: 3g | Fat: 18g | Saturated Fat: 11g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 43mg | Sodium: 442mg | Potassium: 74mg | Fiber: 1g | Sugar: 45g | Vitamin A: 503IU | Vitamin C: 1mg | Calcium: 108mg | Iron: 1mg