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Chocolate Zucchini Brownies

Chocolate zucchini brownies that bake up ultra-fudgy with a shiny, crinkled top. Grated zucchini is squeezed dry and folded into a deep chocolate batter for a dense, moist interior in every square.
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Prep Time 15 minutes
Cook Time 30 minutes
cooling 20 minutes
Total Time 1 hour 5 minutes
Servings: 16 servings
Course: Dessert
Cuisine: American
Calories: 330
Ingredients Equipment Method Notes

Ingredients
  

Dry ingredients
  • 1 cup all-purpose flour
  • 0.75 cup unsweetened cocoa powder
  • 0.5 tsp baking soda
  • 0.25 tsp salt
Wet ingredients
  • 1.5 cup granulated sugar
  • 3 eggs
  • 0.5 cup vegetable oil
  • 1 tsp vanilla extract
Zucchini and chocolate
  • 2 cup zucchini grated and squeezed dry
  • 1 cup semi-sweet chocolate chips melted and cooled slightly (mixed into batter)
  • 0.5 cup semi-sweet chocolate chips fold in at the end
  • 1 flaky sea salt for top (optional)

Equipment

  • 1 sheet pan

Method
 

Prep and preheat
  1. Preheat oven to 350°F and grease a 9x13 baking pan.
  2. Whisk all-purpose flour, unsweetened cocoa powder, baking soda, and salt together in a bowl.
Mix the batter
  1. Melt the first 1 cup semi-sweet chocolate chips and let cool slightly.
  2. Beat granulated sugar, eggs, vegetable oil, and vanilla extract until slightly fluffy, about 2 minutes.
  3. Stir the melted chocolate into the egg mixture along with the grated squeezed zucchini.
  4. Fold the dry ingredients into the wet mixture just until combined, then fold in the remaining 1/2 cup semi-sweet chocolate chips at the end.
Bake and cool
  1. Spread the batter into the greased pan and sprinkle with flaky sea salt if using.
  2. Bake 25–30 minutes at 350°F until the top is set and shiny but the center still has a slight jiggle.
  3. Cool for 20 minutes before cutting so the brownies firm as they cool.

Notes

For the fudgiest texture, squeeze the grated zucchini very dry so the batter stays thick and the center stays dense. Store brownies in an airtight container in the fridge for up to 5 days; freeze cut squares for up to 2 months. If you want a dairy-free swap, use dairy-free semisweet chocolate chips in place of the regular chocolate chips.