Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Chocolate Rhubarb Brownies Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4 from 85 reviews
  • Author: Emma
  • Prep Time: 10 minutes
  • Cook Time: 20 minutes
  • Total Time: 30 minutes
  • Yield: 9 servings
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

Delight in these rich and moist Chocolate Rhubarb Brownies, combining the tartness of fresh rhubarb with the deep flavors of cocoa and dark chocolate chips. Perfect for a unique twist on a classic favorite, these brownies are enhanced with a crunchy nutty texture from walnuts or pecans.


Ingredients

Scale

Wet Ingredients

  • 1 cup granulated sugar
  • 1/2 cup vegetable oil
  • 2 large eggs
  • 1 teaspoon vanilla extract

Dry Ingredients

  • 1/2 cup all-purpose flour (can substitute gluten-free or almond flour)
  • 1/3 cup cocoa powder
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon sea salt

Add-ins

  • 1 cup rhubarb, diced small
  • 1/2 cup dark chocolate chips
  • 1/2 cup chopped walnuts or pecans


Instructions

  1. Preheat Oven and Prepare Pan: Preheat your oven to 375°F (190°C). Line an 8×8 inch baking pan with parchment paper and lightly butter the parchment to prevent sticking.
  2. Mix Wet Ingredients: In a medium bowl, whisk together the sugar, vegetable oil, eggs, and vanilla extract until the mixture is smooth and fully combined.
  3. Combine Dry Ingredients: In a separate large bowl, whisk together the flour, cocoa powder, baking powder, and sea salt until evenly blended.
  4. Make Batter: Add the wet ingredients to the dry ingredients and stir just until incorporated, taking care not to overmix. The batter will be thick.
  5. Fold in Add-ins: Gently fold in the diced rhubarb, dark chocolate chips, and chopped walnuts or pecans until evenly distributed throughout the batter.
  6. Pour and Bake: Pour the batter into the prepared pan and smooth the top with a spatula. Bake for 20–25 minutes, or until a toothpick inserted in the center comes out mostly clean. If using frozen rhubarb, increase baking time by 10–15 minutes.
  7. Cool and Serve: Remove the brownies from the oven and let them cool in the pan for at least 10 minutes. Cut into 9 squares and serve warm or at room temperature.

Notes

  • For a gluten-free option, substitute the all-purpose flour with gluten-free flour or almond flour.
  • To enhance the tartness, ensure the rhubarb is fresh and diced small for even distribution.
  • Do not overmix the batter to keep the brownies tender and fudgy.
  • Adjust baking time if using frozen rhubarb to ensure brownies are fully cooked.
  • Walnuts or pecans can be omitted or replaced with your preferred nuts or seeds.