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A half of a giant cosmic brownie cookie on a white plate with a stack of cookies in the background.

Giant Cosmic Brownie Cookies

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  • Author: Brittany
  • Total Time: 1 hour (with cooling time)
  • Yield: 6 giant cookies 1x

Description

If Cosmic Brownies were your favorite childhood treat, these Giant Cosmic Brownie Cookies will bring back all the nostalgia. They’re crisp on the edges, soft and chewy in the center, and packed with rich brownie flavor, melty chocolate chips, and topped with rainbow candy chips for the ultimate bakery-style cookie at home.

Ingredients

Units Scale
  • 3/4 Cup Unsalted Butter (room temperature)
  • 3/4 Cup Brown Sugar (light or dark)
  • 1/2 cup Granulated Sugar
  • 1 Egg Yolk
  • 1 Egg
  • 2 Teaspoons Vanilla Extract
  • 1 3/4 cups All-Purpose Flour
  • 1/2 cup Cocoa Powder (see notes)
  • 1 Teaspoon Corn Starch
  • 1/2 Teaspoon Baking Soda
  • 1/2 Teaspoon Baking Powder
  • 1/2 Teaspoon Salt (heaping)
  • 3/4 Cup Mini Chocolate Chips
  • 1/2 cup Chocolate Chips
  • 1/2 cup Rainbow Candy Chips

Instructions

  1. Preheat & Prep: Preheat oven to 375°F and line a baking sheet with parchment paper.
  2. Combine Dry Ingredients: Whisk together all-purpose flour, cocoa powder, corn starch, baking powder, baking soda, and salt in a separate bowl.
  3. Butter: Add room temperature butter to stand mixer fitted with the paddle attachment, and mix on med-high for 1 min. Scrape sides, mix again for another 30 seconds.
  4. Cream the Sugars: Add brown sugar and granulated sugar to butter and mix on medium until combined and fluffy.
  5. Wet Ingredients: Add the egg, egg yolk, and vanilla extract until just combined. (don’t over mix!)
  6. Mix It Up! Add dry ingredient mixture on low until just combined. Don’t turn mixer on too high or you could end up with flour all over your kitchen!
  7. Chocolate Chips: Add the mini and regular chocolate chips and pulse the mixer a few times until evenly distributed.
  8. Rainbow Candy Chips: Shape each cookie into tall mounds and roll tops in the rainbow candy chips.
  9. Shape the Cookies: Re-shape cookies if needed after rolling – pinching the tops a few times for a rustic bakery-style look. Place on the prepared parchment lined baking sheet. These cookies weighed about 5.7 oz each and I was able to form 6 giant cookies.
  10. Bake: Bake on middle rack for 12-14 minutes, depending on cookie size. 13 minutes seems to be the sweet spot for me!
  11. Let Cookies Set: These giant cookies continue to bake from residual heat. Leave them on the baking sheet for 1–2 hours to finish setting before enjoying.
  12. Storage: Store cookies in an airtight container at room temperature for up to 5 days, in the fridge for 1 week, or in the freezer for up to 3 months—just microwave for 10–15 seconds before enjoying.

Equipment

Notes

Note: This recipe is written for natural cocoa powder; if you use Dutch-processed cocoa, the dough may be a bit drier, so add 1–2 teaspoons of milk or cream until it comes together smoothly.

  • Prep Time: 10 minutes
  • Cook Time: 12 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

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Find it online: https://coveandkitchen.com/giant-cosmic-brownie-cookies/