Secretly Healthy Zucchini Brownies Recipe
Introduction
These Secretly Healthy Zucchini Brownies combine rich chocolate flavor with the added nutrition of zucchini, making them a delicious treat you can feel good about. Moist and fudgy, they are perfect for anyone looking to sneak some veggies into a classic dessert.

Ingredients
- 2 cups finely grated zucchini (firmly packed)
- 1 cup brown sugar
- 1 1/3 cup applesauce (unsweetened)
- 2 eggs
- 2 teaspoons vanilla extract
- 2/3 cup flour (oat flour or all-purpose)
- 1 cup cocoa powder
- 2 teaspoons baking soda
- 1 1/2 teaspoons baking powder
- 1/2 teaspoon cinnamon
- 1/2 teaspoon salt
- Optional: 1 cup chocolate chips and/or nuts
Instructions
- Step 1: Preheat the oven to 350ºF. Grease a 9×13 inch baking pan.
- Step 2: In a large bowl, mix together the grated zucchini, brown sugar, applesauce, eggs, and vanilla until well combined.
- Step 3: In a separate bowl, stir together the flour, cocoa powder, baking soda, baking powder, cinnamon, and salt.
- Step 4: Add the dry ingredients to the wet ingredients and stir until just combined. Avoid overmixing.
- Step 5: Fold in the chocolate chips and/or nuts if using.
- Step 6: Pour the batter into the prepared pan and spread evenly.
- Step 7: Bake for about 55 minutes, or until a toothpick inserted near the center comes out mostly clean with a few moist crumbs.
- Step 8: Let the brownies cool completely before frosting if desired.
- Optional frosting: Melt together 1/2 cup chocolate chips, 1/2 cup butterscotch chips, and 1/2 cup peanut butter, then spread over cooled brownies. Alternatively, spread on some Nutella.
Tips & Variations
- For a gluten-free version, use oat flour or your favorite gluten-free flour blend.
- If you prefer less sweetness, reduce the brown sugar slightly and add more cocoa powder for a richer taste.
- To boost texture, try adding chopped walnuts or pecans along with the chocolate chips.
- You can substitute applesauce with mashed banana for a different flavor twist.
Storage
Store these brownies in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week. For longer storage, freeze brownies individually wrapped for up to 3 months. Reheat briefly in the microwave or let come to room temperature before serving.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Will the zucchini flavor be noticeable in the brownies?
No, the zucchini adds moisture and nutrition without altering the classic chocolate brownie taste.
Can I make these brownies vegan?
You can replace the eggs with flax eggs (1 tablespoon ground flaxseed mixed with 3 tablespoons water per egg) and use a vegan applesauce and dairy-free chocolate chips.
Print
Secretly Healthy Zucchini Brownies Recipe
- Total Time: 1 hour 15 minutes
- Yield: 12–16 brownies 1x
- Diet: Vegetarian
Description
These Secretly Healthy Zucchini Brownies combine the rich, fudgy texture of traditional brownies with the added nutrition of finely grated zucchini. Sweetened with brown sugar and applesauce, and made with cocoa and oat flour, these brownies offer a moist, flavorful treat that sneaks in veggies in a delicious way. Optional chocolate chips or nuts add texture, and you can finish them with a luscious peanut butter and chocolate butterscotch frosting or Nutella for extra indulgence.
Ingredients
Brownie Ingredients:
- 2 cups finely grated zucchini (firmly packed)
- 1 cup brown sugar
- 1 1/3 cup unsweetened applesauce
- 2 eggs
- 2 teaspoons vanilla extract
- 2/3 cup oat flour (or all-purpose flour)
- 1 cup cocoa powder
- 2 teaspoons baking soda
- 1 1/2 teaspoons baking powder
- 1/2 teaspoon cinnamon
- 1/2 teaspoon salt
Optional Add-ins:
- 1 cup chocolate chips and/or nuts
Optional Frosting:
- 1/2 cup chocolate chips
- 1/2 cup butterscotch chips
- 1/2 cup peanut butter
- OR Nutella for spreading
Instructions
- Preheat Oven and Prepare Pan: Preheat your oven to 350ºF (175ºC). Grease a 9×13 inch baking pan thoroughly to ensure the brownies don’t stick after baking.
- Mix Wet Ingredients: In a large mixing bowl, combine the finely grated zucchini, brown sugar, unsweetened applesauce, eggs, and vanilla extract. Stir well until all these ingredients are evenly incorporated to form a smooth base.
- Combine Dry Ingredients: In a separate bowl, whisk together the oat flour, cocoa powder, baking soda, baking powder, cinnamon, and salt. This ensures even distribution of the leavening agents and spices.
- Mix Dry into Wet: Gradually add the dry ingredient mixture to the wet ingredients. Stir gently just until combined to avoid overmixing, which can make the brownies tough.
- Add Optional Mix-ins: Fold in the chocolate chips and/or nuts if you’re using them, distributing them evenly throughout the batter.
- Bake the Brownies: Pour the batter into the prepared baking pan and spread it evenly. Bake in the preheated oven for approximately 55 minutes, or until a toothpick inserted into the center comes out with moist crumbs but no wet batter.
- Prepare Optional Frosting: To make the frosting, melt together the chocolate chips, butterscotch chips, and peanut butter over low heat or in a microwave in short bursts, stirring frequently until smooth. Alternatively, spread Nutella over the cooled brownies.
- Frost and Serve: Allow the brownies to cool completely in the pan before spreading the frosting or Nutella on top. Cut into squares and serve.
Notes
- Firmly pack the grated zucchini to avoid extra moisture making the batter too runny.
- Using oat flour adds a slightly nutty flavor and makes this recipe a bit more nutritious, but all-purpose flour works fine as a substitute.
- If you prefer a fudgier brownie, slightly underbake by a few minutes and check frequently.
- The optional frosting is rich; feel free to adjust quantities or skip it for a lighter dessert.
- For a nut-free version, omit nuts and use safe chocolate chips.
- Prep Time: 20 minutes
- Cook Time: 55 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Keywords: zucchini brownies, healthy brownies, low fat brownies, vegetable brownies, chocolate dessert, vegetarian dessert

