Welcome to my new summer chocolate obsession: fudgy zucchini brownies. They’re surprisingly rich in chocolate flavor while using zucchini to keep the batter moist. This version mixes easily in a food processor and skips the grating step, so it’s fast and low-effort.
I wasn’t actively looking for a new brownie, but an abundance of summer squash pushed me to try this one. Many zucchini brownies turn out cakey, but this recipe produces a dense, fudgy texture — almost like a flourless chocolate cake, but even more moist. It uses less sugar, flour, and fat than many classic recipes, which makes each square feel indulgent without overwhelming sweetness.
The method is straightforward and well suited to a busy kitchen: chop the zucchini, toss it into the food processor with the wet ingredients, blend until smooth, then add the dry ingredients and chocolate chips. Pulsing the chips briefly breaks them into smaller pieces so they distribute evenly and give a pleasing texture in the finished brownies.
Fudgy Zucchini Brownies
These brownies are a one-bowl (food processor) bake with a rich chocolate profile and a dense, fudgy crumb. I prefer them chilled — they cut cleanly straight from the refrigerator and are pleasantly cool to eat on a hot day. The original recipe suggests a ganache topping, but I appreciate their simplicity plain, without extra frosting.
Ingredients (Yield: 16 brownies)
- 8 ounces zucchini (about one 8″ zucchini), trimmed and cut into chunks
- 3 tablespoons salted butter, melted
- 3 large eggs
- 1 teaspoon vanilla extract
- 3/4 cup sugar
- 2/3 cup unsweetened Dutch-process cocoa powder (or your preferred unsweetened cocoa)
- 1/2 teaspoon espresso powder
- 1/2 teaspoon baking powder
- heaping 1/4 teaspoon salt
- 1/2 cup all-purpose flour
- 3/4 cup semisweet chocolate chips
Instructions
- Preheat the oven to 350°F (175°C). Line a 9″ square pan with foil and spray with cooking spray for easiest removal.
- Place the zucchini chunks in a food processor with the melted butter, eggs, and vanilla. Process until completely smooth.
- Add the sugar, cocoa powder, espresso powder, baking powder, flour, and salt. Pulse a few times just until combined; don’t overmix.
- Add the chocolate chips and pulse several times to break them into smaller pieces so they distribute through the batter.
- Pour the batter into the prepared pan. If the batter has many air bubbles, drop or firmly tap the pan on the counter a few times to release excess air.
- Bake for 25–30 minutes, or until a toothpick inserted in the center comes out clean or with only a few moist crumbs. Avoid underbaking so no wet batter sticks to the toothpick.
- Allow to cool. For clean slices, refrigerate until cold and then cut into squares. Use the foil to lift the slab from the pan if you lined it.
Notes and Tips
– Zucchini or yellow squash both work well. If you don’t have a food processor, use a blender to puree the zucchini and wet ingredients and then fold in the dry ingredients by hand.
– Cocoa choice affects flavor. Dutch-process cocoa tends to yield a rounder, less acidic chocolate taste; regular unsweetened cocoa is fine if that’s what you have. I tested this recipe with both and enjoyed the depth of Dutch-processed cocoa.
– Chocolate chip selection changes sweetness and richness. Semisweet chips balance the brownies nicely; bittersweet chips make them more intense, and milk chocolate increases sweetness.
– Processing the batter can create air bubbles. Tapping the pan before baking helps reduce surface holes; if you plan to frost, surface imperfections won’t be visible.
– For the neatest slices, chill the brownies and cut with a hot, dry knife: heat the knife under hot water, dry it, then slice. Reheat the knife between cuts as needed, wiping it clean before each slice.
– These brownies are rich but not overpowering; they feel like an indulgence that’s easy to enjoy more than one small square of. Store them in the refrigerator if you prefer them chilled, or at room temperature for a softer texture.
