Sourdough Cosmic Brownies

These sourdough cosmic brownies are a homemade twist on the nostalgic treat. They're ultra fudgy, rich with chocolate, and topped with a glossy ganache and crunchy candy bits. The sourdough adds a subtle tang that deepens the chocolate flavor and makes every bite feel a little extra special.

Course Dessert

Cuisine American

Keyword Sourdough Discard

Prep Time 10

Cook Time 35

Total Time 45

Servings

Calories 314kcal

Author Kate Freebairn

Equipment

Mixing Bowl
Square Brownie Pan 9" x 9"

Ingredients

Sourdough Brownies

Dry Ingredients

150 g All Purpose Flour
380 g White Sugar
65 g Cocoa Powder
3 g Salt
3 g Baking Powder
125 g Chocolate Chips (I've used semi sweet)

Wet Ingredients

130 g Butter (melted)
2 Eggs (large eggs are best, mine were 70g each, if using small eggs add 3)
5 g Vanilla Extract
120 g Sourdough Starter (can be unfed or active and bubbly)

Chocolate Ganache Topping

130 g Heavy Whipping Cream
250 g Semi Sweet Chocolate Chips (I've used Kirkland Brand from Costco)
100 g Mini M&Ms (or candy coated chocolate chips)

Instructions

Preheat the oven to 160ºC/320ºF. Grease your pan with butter or line it with parchment paper.
Add all the dry ingredients to a bowl and whisk together until well combined, ensuring the chocolate chips are well distributed.
In a separate bowl, whisk the wet ingredients together until well combined.
Pour the wet ingredients into the bowl with the dry ingredients and using a spatula, gently mix all of the wet and dry ingredients together.
Place the sourdough brownie mixture into your prepared pan and bake for 35 minutes at 160ºC/320ºF.
Remove from the oven and allow to cool for around an hour before preparing the ganache topping.

Preparing the Ganache

Place the semi sweet chocolate chips and heavy whipping cream into a microwave proof jug and microwave for around 1 minute and 30 seconds. Whisk together until it forms a glossy ganache.
Pour over the sourdough cosmic brownies and top with mini m&ms or sprinkles. Set in the fridge for 2 hours before slicing.

Notes

Sourdough Starter or Sourdough Discard - you can use either active starter or sourdough discard in this recipe, either works just fine. You don't want your sourdough starter to be too thick though or it won't combine well with the other ingredients and can leave streaks of baked starter through the brownies.

Nutrition