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Vegan Homemade Cosmic Brownies Recipe

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4.1 from 9 reviews

These vegan homemade cosmic brownies are fudgy, rich, and topped with a creamy chocolate glaze and colorful rainbow chip sprinkles. Made without eggs or dairy, they use ground flaxseed as a binder and vegan butter for moisture, making them a perfect plant-based treat that’s easy to prepare and bake in just under an hour.

  • Total Time: 50 minutes
  • Yield: 9 servings

Ingredients

For the Brownies

  • 2 tbsp ground flaxseed
  • 6 tbsp warm water
  • 1 cup white sugar
  • ⅓ cup unsweetened cocoa powder
  • 1 cup all-purpose flour
  • ¼ teaspoon salt
  • ¼ teaspoon baking powder
  • ½ cup melted vegan butter
  • 1 tsp vanilla bean paste

For the Glaze

  • ¼ cup vegan chocolate chips
  • 2 tbsp nondairy milk (more or less as needed)
  • Rainbow chip sprinkles (for topping)

Instructions

  1. Preheat the oven: Set your oven to 350°F (175°C) to prepare for baking the brownies.
  2. Make flax egg: In a small bowl, combine the ground flaxseed with the warm water and stir well. Set it aside to thicken, creating a flax egg that acts as a vegan binder.
  3. Mix dry ingredients: In a large mixing bowl, whisk together sugar, cocoa powder, all-purpose flour, salt, and baking powder until evenly combined.
  4. Add wet ingredients: Pour the melted vegan butter, vanilla bean paste, and thickened flaxseed mixture into the dry ingredients. Stir until a thick brownie batter forms.
  5. Prepare baking dish: Line an 8×8 inch baking pan with parchment paper, which helps prevent sticking and makes removal easier.
  6. Bake the brownies: Pour the batter into the prepared pan and smooth out the surface with a spatula. Bake for 35 minutes or until the top looks dry and a toothpick inserted in the center comes out with just a few moist crumbs.
  7. Cool the brownies: Allow the baked brownies to cool completely to room temperature before applying the glaze.
  8. Make the glaze: In a microwave-safe bowl, combine vegan chocolate chips and nondairy milk. Heat in 15-second intervals, stirring between each, until the mixture becomes smooth and creamy. Add more milk if it is too thick to pour easily.
  9. Glaze and decorate: Pour the chocolate glaze evenly over the cooled brownies, then sprinkle colorful rainbow chip sprinkles on top.
  10. Set the glaze: Place the glazed brownies in the refrigerator to allow the topping to solidify. Once set, store the brownies at room temperature or refrigerate for a fudgier texture.

Notes

  • Be sure to line the baking dish with parchment paper as these brownies tend to stick.
  • The flaxseed mixture needs time to thicken and behaves as an egg substitute.
  • Adjust the amount of nondairy milk in the glaze to achieve a pourable consistency.
  • Store brownies refrigerated or at room temperature based on your preferred texture—cooled gives a fudgier bite.
  • Use a toothpick test to check doneness without overbaking.
  • Author: Maya
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegan