These No-Flour Chocolate Zucchini Oat Muffins are soft, moist, chocolatey, and easy to make. They use oats instead of regular flour, while finely grated zucchini adds moisture without overpowering the chocolate flavor. Perfect for breakfast, an afternoon snack, or a homemade treat!
Prep time
15 minutes
Bake time
18–24 minutes
Yield
12 muffins
Ingredients
Dry ingredients
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2 cups (180–200 g) rolled oats
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½ cup (45–50 g) unsweetened cocoa powder
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1 teaspoon baking powder
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½ teaspoon baking soda
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¼ teaspoon salt
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½ teaspoon ground cinnamon (optional)
Wet ingredients
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1 medium zucchini, finely grated (about 1 cup)
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2 large eggs
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½ cup (120 g) plain Greek yogurt
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⅓ cup (80 ml) maple syrup or honey
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¼ cup (60 ml) milk
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1 teaspoon vanilla extract
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2 tablespoons neutral oil or melted coconut oil
Optional chocolate topping
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⅓ cup (55–60 g) chocolate chips
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1 tablespoon rolled oats for sprinkling
Instructions
Step 1: Prepare the zucchini
Preheat the oven to 350°F (175°C). Line a 12-cup muffin pan with paper liners or lightly grease it.
Finely grate the zucchini. Gently squeeze out excess liquid using a clean kitchen towel, but do not dry it completely. The remaining moisture helps keep the muffins soft.
Step 2: Prepare the oat mixture
Place the rolled oats in a blender or food processor and blend until they resemble a fine flour.
Transfer to a large bowl and whisk together the ground oats, cocoa powder, baking powder, baking soda, salt, and optional cinnamon.
Step 3: Mix the wet ingredients
In a separate bowl, whisk the eggs, Greek yogurt, maple syrup, milk, vanilla extract, and oil until smooth.
Stir in the grated zucchini until evenly distributed.
Step 4: Combine the batter
Add the dry ingredients to the wet mixture. Stir gently until just combined, then fold in most of the chocolate chips.
Let the batter rest for 5 minutes so the oats can absorb some moisture. The batter should be thick but scoopable.
Step 5: Fill the muffin pan
Divide the batter evenly among the 12 muffin cups, filling each about three-quarters full.
Sprinkle the remaining chocolate chips and a few oats on top for a bakery-style finish.
Step 6: Bake the muffins
Bake for 18–24 minutes, or until the tops are set and a toothpick inserted into the center comes out with a few moist crumbs but no wet batter.
Avoid overbaking, as the muffins can become dry.
Step 7: Cool and serve
Let the muffins cool in the pan for 5–10 minutes, then transfer them to a wire rack.
Allow them to cool before eating so the centers can finish setting. Serve warm or at room temperature.
Tips for perfect muffins
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Use finely grated zucchini: This helps it blend into the chocolate batter.
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Avoid excess water: Too much zucchini liquid can make the muffins soggy in the center.
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Blend the oats finely: This gives the muffins a smoother texture without traditional wheat flour.
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Choose your chocolate chips: Dark, semisweet, or milk chocolate chips all work well.
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Make them gluten-free: Use certified gluten-free oats and check the labels on your other ingredients.
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Check early: Ovens vary, so begin checking the muffins at around 18 minutes.
Frequently Asked Questions
Q1: Do these muffins contain regular flour?
No. They use oats blended into a flour-like consistency instead of wheat flour. For a strictly flour-free recipe, choose whole rolled oats and blend them yourself.
Q2: Can I taste the zucchini?
The chocolate and cocoa flavors are prominent, and finely grated zucchini blends into the texture. It mainly adds moisture rather than a noticeable vegetable flavor.
Q3: Do I need to peel the zucchini?
No. Wash it well and grate it with the peel on. The green peel is generally difficult to notice in the finished chocolate muffins.
Q4: Can I make these muffins without a blender?
Yes. Use commercially prepared oat flour instead of whole rolled oats. Measure approximately 180–200 g, or enough to match the weight of the oats called for in the recipe.
Q5: Can I replace the Greek yogurt?
Yes. Plain regular yogurt can work, although a thinner yogurt may make the batter more moist. Use unsweetened yogurt for the most predictable result.
Q6: How do I make the muffins sweeter?
You can add a little extra maple syrup or honey, or use sweeter chocolate chips. Keep in mind that extra liquid may change the texture slightly.
Q7: How should I store these muffins?
Because they contain fresh zucchini, cool them completely and store them in an airtight container in the refrigerator for up to 4–5 days. Reheat briefly if you prefer them warm.
Q8: Can I freeze them?
Yes. Let them cool completely, place them in a freezer-safe container or bag, and freeze for up to 3 months for best quality. Thaw in the refrigerator or microwave briefly until warmed through.
Q9: Can I make these muffins without added sweetener?
Yes, but the muffins will taste more bitter because of the unsweetened cocoa. You can experiment with mashed ripe banana or unsweetened applesauce, although these substitutions will change the flavor and texture.
Q10: How can I tell when the muffins are fully baked?
The tops should look set, and a toothpick inserted into the center should come out without wet batter. A few moist crumbs are fine.
Enjoy your No-Flour Chocolate Zucchini Oat Muffins! These soft, chocolatey muffins are a delicious way to combine oats, zucchini, and cocoa in one easy homemade treat.