Healthy Zucchini Brownies

Featured in Sweet Treats for Every Occasion.

These healthy zucchini brownies are rich, moist, and chocolatey while using wholesome ingredients like finely grated zucchini, applesauce, and oat flour. Quick to prepare, they balance indulgence with nutritious elements. Add chocolate chips or nuts for extra flavor, and top with an optional frosting for a perfect dessert. Bake and enjoy guilt-free!

Updated on Tue, 13 May 2025 08:04:24 GMT
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This secretly healthy zucchini brownie recipe transforms a garden vegetable into the most decadent chocolate treat you'll ever taste. The combination of zucchini and applesauce creates incredibly moist brownies with significantly less fat than traditional recipes, while still delivering that rich chocolate experience we all crave.

I first discovered this recipe during zucchini season when my garden was overflowing and my kids were becoming suspicious of all the "green stuff" in their meals. These brownies became my secret weapon and no one ever guesses the main ingredient is vegetables.

Ingredients

  • Zucchini: Finely grated and packed provides moisture and nutrients while completely disappearing in the final product
  • Brown sugar: Adds depth with its molasses undertones that complement the chocolate perfectly
  • Unsweetened applesauce: Replaces oil or butter making these brownies heart healthier
  • Eggs: Provide structure and richness essential for proper rising
  • Vanilla extract: Enhances the chocolate flavor without adding calories
  • Oat flour: Offers a nutritious alternative to all purpose flour with a subtle nutty flavor
  • Cocoa powder: Delivers intense chocolate flavor without added fat, look for dutch processed for best results
  • Baking soda and powder: Work together to create the perfect rise despite the heavy vegetable content
  • Cinnamon: A tiny amount enhances chocolate flavor without tasting like cinnamon
  • Salt: Balances the sweetness and intensifies the chocolate flavor

Step-by-Step Instructions

Prepare Your Pan:
Generously grease a 9x13 inch baking pan making sure to get into the corners. Preheating your oven to 350°F ensures immediate and even baking when the brownies go in.
Combine Wet Ingredients:
Mix the finely grated zucchini with brown sugar, applesauce, eggs, and vanilla until well combined. The moisture from the zucchini will help dissolve the sugar creating a wet but cohesive mixture.
Add Dry Ingredients:
Whisk together the flour, cocoa powder, baking soda, baking powder, cinnamon, and salt in a separate bowl to ensure even distribution. Then gradually incorporate into the wet ingredients stirring just until no dry streaks remain. Overmixing can make brownies tough.
Mix In Optional Add Ins:
If using, gently fold in chocolate chips or nuts distributing them evenly throughout the batter. The chocolate chips will create pockets of melty goodness while nuts add textural contrast.
Bake To Perfection:
Pour the batter into your prepared pan and spread evenly. Bake for approximately 55 minutes or until a toothpick inserted in the center comes out with a few moist crumbs. The brownies will continue to set as they cool.
Add Optional Frosting:
If desired, prepare the frosting by melting chocolate chips, butterscotch chips, and peanut butter together until smooth. Spread over cooled brownies for an extra indulgent treat or simply spread some Nutella for a quicker option.
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The humble zucchini is truly the hero ingredient here. I've served these brownies at countless school bake sales and neighborhood gatherings and no one has ever suspected they were eating vegetables. My proudest moment was when my vegetable-averse nephew asked for seconds and then the recipe to take home.

Storage Solutions

These brownies actually taste better the next day as the flavors meld and intensify. Store them in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate for up to a week; the cold temperature actually enhances their fudgy texture. When freezing, wrap individual portions in parchment paper before placing in a freezer bag to prevent sticking and allow for easy single-serving defrosting.

Clever Substitutions

If you're looking to make these even healthier, you can reduce the brown sugar to 3/4 cup and add 1/4 cup of maple syrup for natural sweetness. For a gluten-free version, almond flour or a gluten-free baking blend works wonderfully in place of the oat flour. Don't have applesauce? Mashed banana makes a great substitute though it will add a slight banana flavor that pairs beautifully with the chocolate.

Serving Suggestions

These brownies shine on their own but can be elevated with a scoop of vanilla ice cream or a dollop of Greek yogurt for a more virtuous pairing. For a dessert platter, cut them into smaller bite-sized squares and dust with a little powdered sugar. They make excellent lunchbox treats and actually provide sustained energy unlike traditional sugar bombs. For a special occasion, drizzle with a bit of warm raspberry sauce for a sophisticated touch.

Frequently Asked Questions

→ How do I make zucchini brownies moist?

The grated zucchini and applesauce provide moisture to keep the brownies soft and fudgy, even without additional fats.

→ Can I substitute all-purpose flour for oat flour?

Yes, all-purpose flour works well as a substitute for oat flour in this brownie recipe.

→ What can I use as a frosting alternative?

Instead of the suggested frosting, you can spread Nutella or leave the brownies plain for a simpler option.

→ How do I store these zucchini brownies?

Store the brownies in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.

→ Can I add extra ingredients to the batter?

Yes, you can stir in chocolate chips, nuts, or other desired add-ins for additional texture and flavor.

Healthy Zucchini Brownies

Delicious zucchini brownies with rich cocoa flavor.

Prep Time
~
Cook Time
55 Minutes
Total Time
55 Minutes

Category: Desserts

Difficulty: Intermediate

Cuisine: American

Yield: 15 Servings (15 brownies)

Dietary: Vegetarian

Ingredients

→ Brownie Ingredients

01 2 cups finely grated zucchini, firmly packed
02 1 cup brown sugar
03 1 1/3 cups unsweetened applesauce
04 2 eggs
05 2 teaspoons vanilla extract
06 2/3 cup oat flour or all-purpose flour
07 1 cup unsweetened cocoa powder
08 2 teaspoons baking soda
09 1 1/2 teaspoons baking powder
10 1/2 teaspoon ground cinnamon
11 1/2 teaspoon salt

→ Optional Add-ins

12 1 cup chocolate chips
13 1 cup chopped nuts

→ Optional Frosting

14 1/2 cup chocolate chips
15 1/2 cup butterscotch chips
16 1/2 cup peanut butter
17 Nutella, as needed

Instructions

Step 01

Preheat the oven to 350ºF and grease a 9x13 inch pan.

Step 02

Mix together the grated zucchini, brown sugar, applesauce, eggs, and vanilla extract in a large bowl.

Step 03

Stir together the flour, cocoa powder, baking soda, baking powder, cinnamon, and salt in a separate bowl, then gradually add to the wet ingredients and mix until just combined.

Step 04

If using, fold in the chocolate chips and nuts.

Step 05

Pour the batter into the prepared pan and bake for approximately 55 minutes, or until a toothpick inserted into the center comes out clean.

Step 06

If desired, melt chocolate chips, butterscotch chips, and peanut butter together for frosting or spread Nutella on top of the cooled brownies.

Tools You'll Need

  • 9x13 inch baking pan
  • Mixing bowls
  • Spatula
  • Measuring cups and spoons
  • Oven

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains eggs
  • Contains gluten (if using all-purpose flour)
  • Contains nuts (if add-ins or peanut butter are used)
  • Contains dairy (if chocolate chips contain milk)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 87
  • Total Fat: ~
  • Total Carbohydrate: ~
  • Protein: ~