Simple Grain Free Peanut Butter Zucchini Bread

Here’s my favorite grain-free zucchini bread recipe, packed with chocolate chips and peanut butter. It’s a soft, moist bread that combines garden-fresh zucchini with the classic combo of chocolate and peanut butter.

This bread has become my go-to recipe when I need to use up summer zucchini from the garden. I usually make a double batch because it disappears so quickly in our house. Nothing beats a warm slice with your morning coffee, right?

What Kind of Zucchini Should I Use?

For this bread recipe, medium-sized zucchini are your best bet since they tend to be less watery and have fewer seeds than larger ones. Look for zucchini that are firm to the touch and have smooth, unblemished dark green skin – these will give you the best texture and flavor in your bread. The most important step is removing the excess moisture after grating, so be sure to squeeze your shredded zucchini well in a clean kitchen towel or using paper towels. If you can only find large zucchini, just avoid using the seedy center part and you’ll still get great results.

Options for Substitutions

This recipe is pretty adaptable and great for different dietary needs. Here are some handy swaps you can try:

• Peanut butter: Not a peanut butter fan or have an allergy? Any nut or seed butter works great here – try almond butter, cashew butter, or sunflower seed butter. Just make sure it’s the natural, runny kind without added oils or sugar.
• Maple syrup: You can swap this with honey or agave nectar. If using honey, the bread might brown a bit faster, so keep an eye on it while baking.
• Eggs: For a vegan version, try using 2 flax eggs (2 tablespoons ground flaxseed mixed with 6 tablespoons water, let sit for 15 minutes). Note that the texture might be slightly more dense.
• Coconut flour: This is pretty unique and super absorbent, so stick with either coconut flour or protein powder as listed. These two aren’t interchangeable with regular flour.
• Chocolate chips: Feel free to use any chips you like – milk chocolate, white chocolate, or even chopped nuts. For a sugar-free option, try sugar-free chocolate chips or cacao nibs.
• Zucchini: You can use yellow summer squash instead – it works exactly the same way. Just make sure to squeeze out the excess moisture really well.

Watch Out for These Mistakes While Baking

The biggest mistake when making zucchini bread is not properly draining the shredded zucchini – excess moisture can make your bread dense and gummy, so be sure to squeeze it thoroughly in a clean kitchen towel until no more water comes out.

Getting the right consistency with natural peanut butter can be tricky, so make sure to stir it well before measuring, and if it’s too thick or dry, warming it slightly will help it blend better with other ingredients.

When working with coconut flour, precision is crucial since it’s highly absorbent – even a small measurement error can affect the texture, so stick to the exact amount and let the batter rest for 5 minutes before baking to allow the coconut flour to fully absorb the moisture.

For the best texture, avoid overmixing the batter once you’ve combined the wet and dry ingredients, and check your bread about 10 minutes before the suggested baking time since grain-free breads can go from perfectly done to dry very quickly.

What to Serve With Zucchini Bread?

This peanut butter zucchini bread is perfect for breakfast or as an afternoon snack with a hot cup of coffee or tea. For breakfast, try spreading a slice with a little butter or cream cheese, and pair it with some fresh berries on the side for extra natural sweetness. If you’re having it as an afternoon treat, I love serving it with a cold glass of almond milk or your favorite dairy-free milk alternative. Since this bread is already packed with protein from the peanut butter, it makes a filling snack on its own, but you could also serve it alongside some Greek yogurt for an extra protein boost.

Storage Instructions

Keep Fresh: This zucchini bread stays moist and yummy when kept in an airtight container. Pop it in the fridge and it’ll last for up to 5 days. I like to place a paper towel in the container to absorb any extra moisture from the zucchini – this helps keep the bread from getting too wet.

Freeze: Want to save some for later? Cut the bread into slices, place parchment paper between each piece, and store in a freezer-safe container. It’ll keep well for up to 3 months. This is super handy when you need a quick breakfast or snack!

Thaw & Enjoy: When you’re craving a slice, just grab it from the fridge or let frozen pieces thaw at room temperature for about an hour. You can even give it a quick 10-second zap in the microwave if you like it slightly warm – the chocolate chips get a bit melty and it’s so good!

Preparation Time	10-15 minutes
Cooking Time	40-50 minutes
Total Time	50-65 minutes
Level of Difficulty	Easy

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 800-900
• Protein: 25-35 g
• Fat: 40-50 g
• Carbohydrates: 80-90 g

Ingredients

• 1 medium zucchini (grated and excess moisture squeezed out)
• 2 tbsp coconut flour (sifted to remove lumps)
• 3/4 cup smooth peanut butter (I use Skippy natural)
• 2 large eggs (room temperature)
• 1/4 cup pure maple syrup
• 1 tsp baking soda
• 1/2 cup dark chocolate chips (optional but recommended for richness)
• 1 tsp vanilla extract (pure vanilla preferred)
• 1/2 tsp ground cinnamon (freshly ground for better flavor)

Step 1: Prepare Your Pan and Mise en Place

• 1 medium zucchini

Preheat your oven to 350°F (175°C) and prepare a loaf pan by lining it with parchment paper or lightly greasing it—this prevents sticking and makes removal easier.

While the oven heats, prepare your zucchini by grating it on a box grater, then place it in a clean kitchen towel and squeeze firmly to remove excess moisture; this step is crucial because zucchini releases a lot of water, and removing it prevents the bread from becoming dense and soggy.

Set the prepared zucchini aside.

Step 2: Combine Wet Ingredients and Build the Base

• 3/4 cup smooth peanut butter
• 1/4 cup pure maple syrup
• 2 large eggs
• 1 tsp vanilla extract
• 1 medium zucchini

In a large mixing bowl, combine the room-temperature eggs, smooth peanut butter, pure maple syrup, and vanilla extract.

Whisk these together until well blended and smooth—the eggs should be fully incorporated and the mixture should have a uniform, creamy texture.

I like to use room-temperature eggs because they blend more easily and create a better texture in the final bread.

Once smooth, fold in the prepared zucchini from Step 1 until evenly distributed throughout the wet mixture.

Step 3: Mix Dry Ingredients and Complete the Batter

• 2 tbsp coconut flour
• 1 tsp baking soda
• 1/2 tsp ground cinnamon
• 1/2 cup dark chocolate chips
• wet mixture from Step 2

In a separate small bowl, whisk together the sifted coconut flour, baking soda, and ground cinnamon—sifting the coconut flour removes clumps and ensures even distribution of the baking soda and cinnamon throughout the bread.

Pour the dry ingredient mixture into the wet mixture from Step 2 and fold gently with a spatula until just combined; avoid overmixing, as this can develop the gluten-like structure in coconut flour and make the bread tough.

For the best flavor, I always use freshly ground cinnamon rather than pre-ground—the difference is noticeable and worth the extra step.

Fold in most of the dark chocolate chips, reserving a small handful for topping.

Step 4: Bake and Cool

• batter from Step 3
• reserved chocolate chips

Pour the batter from Step 3 into your prepared loaf pan, smoothing the top with a spatula.

Sprinkle the reserved chocolate chips over the surface for a finished appearance and extra richness.

Bake for 40-50 minutes until a toothpick inserted into the center comes out clean or with just a few moist crumbs—the bread will set up and the edges will pull slightly away from the pan sides when fully baked.

Remove from the oven and let cool in the pan for 15 minutes, which allows the bread to set enough to remove without falling apart.

Turn the bread out onto a wire rack and allow it to cool completely before slicing, which ensures clean slices and better texture.