Cosmic Skillet Brownie

eyedocbakes
nostalgic cosmic skillet brownie, copycat homemade cosmic brownies

A take on the classic Cosmic Brownies, but this time made in a large skillet! A chewy, fudgy brownie covered in a shiny chocolate ganache, and topped with rainbow covered chocolate chips. This skillet brownie is out of this world! 

Ready for some nostalgia? I remember getting so excited when my mom would get me Little Debbie’s cosmic brownies. Having one as a dessert after dinner, or even better, bringing one to school? That was a treat! But guess what? Now that we’re adults, we can have these brownies whenever we want! So I got to work playing with my brownie recipe to make a chewier version that is perfect to just dig into and get that awesome bite of nostalgia!

nostalgic cosmic skillet brownie, copycat homemade cosmic brownies

What You’ll Need. . . 

  • unsalted butter
  • canola oil
  • brown sugar
  • granulated sugar
  • eggs
  • vanilla extract
  • semi-sweet chocolate chips
  • flour
  • cocoa powder
  • baking soda
  • salt
  • heavy cream
  • cosmic sprinkles (I use similar to these)

nostalgic cosmic skillet brownie, copycat homemade cosmic brownies

Making the Brownie

  1. Melt the butter and mix it with oil in a large bowl. Add in sugar and whisk. Next add in the vanilla and eggs and whisk thoroughly for 3-4 minutes. (By the way – this step – the whisking of the eggs –  is super important for brownies you’re not topping with a ganache or frosting, because it get’s you that crinkly top! )
  2. Melt 1/2 cup of chocolate chips in the microwave in 30 second intervals, mixing in between. Let cool 2-4 minutes. Whisk into the batter. 
  3. Toss in the  flour, cocoa powder, baking soda, and salt and fold until just mixed in. Don’t overmix it. Next fold in the other 1/2 cup of chocolate chips.
  4. Butter your cast iron skillet. Preheat oven to 350F. Smooth the batter into the skillet. Bake about 32 minutes. It’s done when a toothpick comes out almost clean – not completely clean. It also shouldn’t be too jiggly, but you don’t want to overbake the brownie. Remove and let come to room temperature. 

Making the Ganache Topping

  1. Place the heavy cream in the microwave for about 30-40 seconds until it is a little bubbly. Then toss in your  chocolate chips and mix until melted and smooth.
  2. Pour the ganache over your brownie. Sprinkle with the cosmic sprinkles. Let this cool completely for 2-4 hours to get a fudgy texture, and let the brownie get  that cosmic brownie chewy texture –  or eat right away if you want it meltier and can’t wait!

nostalgic cosmic skillet brownie, copycat homemade cosmic brownies

Some notes. . .

  1. Brownie can be covered with plastic wrap in the pan, or cut and removed into an airtight container, and stored in the refrigerator for up to 5 days – although I doubt you’ll have any left after the first day!

If you liked this recipe, you might want to try. . .

  1. The Best Brownies
  2. Chocolate Cupcake with Nutella Frosting
  3. Lime Cranberry Blondies

Tried this recipe?

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nostalgic cosmic skillet brownie, copycat homemade cosmic brownies

Cosmic Skillet Brownie

An updated take on the nostalgic cosmic brownie, this time baked in a large skillet, so you can dig into that chocolatey fudgy rainbow chocolate chip magic!
Prep Time10 mins
Cook Time32 mins
Cooling/Setting time3 hrs
Total Time3 hrs 42 mins
Course: Dessert
Cuisine: American
Keyword: brownie, brownies, chocolate ganache, cosmic brownies, easy brownie recipe, pizookie, rainbow sprinkles, skillet brownie, skillet cookie
Servings: 1 10 inch round brownie

Equipment

  • cast iron skillet

Ingredients

Brownie

  • ½ cup unsalted butter +2 tbsp
  • 1 tbsp canola oil
  • cup brown sugar
  • ½ cup granulated sugar
  • 2 large eggs
  • ½ tbsp vanilla extract
  • 1 cup semi-sweet chocolate chips divided
  • ¾ cup flour
  • ¼ cup cocoa powder
  • ½ tsp baking soda

Chocolate Ganache topping

  • ¼ cup heavy cream
  • ½ cup semi-sweet chocolate chips
  • 2 tbsp cosmic sprinkles (rainbow coated chocolate chips)

Instructions

Brownie

  • Melt the butter and mix it with oil in a large bowl. Add in brown and granulated sugar and whisk in until smooth. Preheat oven to 350F.
  • Add in the vanilla and eggs and whisk thoroughly for 3-4 minutes. Melt 1/2 cup of chocolate chips in the microwave in 30 second intervals, mixing in between. Let cool 2-4 minutes. Whisk into the batter. 
  • Toss in the  flour, cocoa powder, baking soda, and salt and fold until just mixed in. Don't overmix it. Next fold in the other 1/2 cup of chocolate chips.
  • Butter your cast iron skillet. Smooth the batter into the skillet. Bake about 32 minutes. It's done when a toothpick comes out almost clean - not completely clean, since we don't want an overbaked brownie. It also shouldn't be too jiggly. Remove and let come to room temperature. 

Chocolate Ganache + Topping

  • Place the heavy cream in the microwave for about 30-40 seconds until it is a little bubbly. Toss in your chocolate chips and mix until melted and smooth. Pour the ganache over your brownie. Sprinkle with the cosmic sprinkles.
  • Let this cool completely for 2-4 hours to get a fudgy texture, and let the brownie get  that cosmic brownie chewy texture -  or eat right away if you want it meltier and can't wait!

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