Cosmic Brownie Mix Cookies

User Reviews

5

12 reviews
Excellent
  • Prep Time

    10 mins

  • Cook Time

    12 mins

  • Additional Time

    30 mins

  • Total Time

    52 mins

  • Servings

    24

  • Calories

    180 kcal

  • Course

    Dessert

  • Cuisine

    American

Cosmic Brownie Mix Cookies

Cosmic Brownie Mix Cookies transform boxed brownie mix into chewy cookies topped with chocolate fudge frosting and rainbow sprinkles. The chilled dough helps prevent spreading, ensuring thick, fudgy cookies with gooey centers and decorated fun frosting on top for texture contrast and color.

Description

This recipe blends boxed brownie mix with eggs and melted butter to form cookie dough, which is chilled before baking to prevent excessive spreading. By baking at 350°F for 11–12 minutes, the cookies develop set edges while staying soft inside. Cooling on the pan before transferring helps maintain shape.

After baking, chocolate fudge frosting is slightly warmed to a spreadable consistency and applied to each cookie. Rainbow crunch sprinkles are added on top, creating a festive, colorful finish. The combination results in rich chocolate cookies with a thick, chewy texture and decorative sweetness from the frosting and sprinkles.

The recipe includes tips on preferring specific brownie mixes that yield better cookie thickness and avoiding others prone to excessive spread. Substituting vegetable oil for butter is possible. Storage recommendations include keeping cookies airtight at room temperature for up to three days and freezing dough or unfrosted cookies for up to three months.

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Ingredients

Servings
  • 18 oz brownie mix box
  • 2 egg
  • 1/4 cup butter melted
  • 1 cup chocolate fudge frosting
  • 5.25 oz rainbow crunch sprinkles container

Instructions

  1. Preheat oven to 350°F. Line a cookie sheet pan with parchment paper.
  2. Stir together the brownie mix, eggs, and melted butter in a large mixing bowl until combined.
  3. Scoop a heaping tablespoon worth of brownie dough onto the sheet pan (I like to use a cookie scoop for this), leaving about two inches between each cookie. Allow the dough to chill in the fridge for thirty minutes.
  4. Bake for 11-12 minutes until the edges are set. Allow cookies to cool on the sheet pan for 5 minutes, then transfer to a cooling rack.
  5. Microwave the frosting for 20 seconds, making sure to stir halfway through. You want the frosting to be thinned out but not soupy.
  6. Spread about one tablespoon of the frosting on the top of each cookie and top with the sprinkles.

Notes

  • Use Ghirardelli or Pillsbury brownie mix for best results; avoid Duncan Hines or Betty Crocker unless adding 1/4 cup flour to reduce spreading.
  • If your brownie mix includes a chocolate syrup packet, add it to the dough for deeper chocolate flavor.
  • You may substitute melted butter with vegetable oil if needed.
  • Do not overbake to prevent tough cookies; bake until edges are just set.
  • Line the baking sheet with parchment paper for easier cleanup and to prevent burning on the bottom.
  • Allow dough to chill for 30 minutes before baking to maintain cookie thickness.
  • Store baked cookies in an airtight container at room temperature for up to 3 days.
  • Freeze dough balls in a freezer-safe container for up to 3 months; thaw in refrigerator before baking.
  • Freeze unfrosted baked cookies up to 3 months; thaw at room temperature before serving.

Nutrition Information

Show Details
Calories 180kcal (9%) Carbohydrates 28g (9%) Protein 2g (4%) Fat 7g (11%) Saturated Fat 3g (15%) Polyunsaturated Fat 1g (6%) Monounsaturated Fat 3g (15%) Trans Fat 1g (50%) Cholesterol 19mg (6%) Sodium 101mg (4%) Potassium 24mg (1%) Fiber 1g (4%) Sugar 22g (44%) Vitamin A 79IU (2%) Calcium 3mg (0%) Iron 1mg (6%)

Nutrition Facts

Serving: 24Serving

Amount Per Serving

Calories 180 kcal

% Daily Value*

Calories 180kcal 9%
Carbohydrates 28g 9%
Protein 2g 4%
Fat 7g 11%
Saturated Fat 3g 15%
Polyunsaturated Fat 1g 6%
Monounsaturated Fat 3g 15%
Trans Fat 1g 50%
Cholesterol 19mg 6%
Sodium 101mg 4%
Potassium 24mg 1%
Fiber 1g 4%
Sugar 22g 44%
Vitamin A 79IU 2%
Calcium 3mg 0%
Iron 1mg 6%

* Percent Daily Values are based on a 2,000 calorie diet.

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5

12 reviews
Excellent

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