Healthy Oat Flour Zucchini Bread (No Sugar Added)
This Healthy Oat Flour Zucchini Bread is a nourishing twist on a classic—made with high-fibre oat flour, olive oil, and no added sugar. Moist, naturally sweetened, and packed with protein and plant-based goodness, it's a vegetarian, diabetes-friendly, and gluten-free recipe perfect for breakfast, snacking, or meal prep.
- Suitable for diets:
- High-Fiber
- High-Protein
- Vegetarian
Servings: slices
Why Diabetes Friendly?
- Low Glycemic Load: Made with oat flour and stevia instead of white flour and sugar, helping to stabilize blood glucose levels.
- High Fibre: Oat flour, flaxseed, zucchini, and walnuts contribute to fiber content, slowing carbohydrate absorption.
- No Added Sugar: Sweetened with pure stevia and applesauce (unsweetened), avoiding blood sugar spikes.
- Healthy Fats: Olive oil and walnuts provide monounsaturated fats beneficial for heart and blood sugar health.
- Protein-Rich: Eggs, Greek yogurt, and flaxseed help keep blood sugar balanced by slowing digestion.
- Portion Control Friendly: Can be pre-sliced into 10 manageable servings — helpful for carb-counting and insulin dosing.
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Equipment
- 9x5-inch loaf pan
- mixing bowls (one large (wet ingredients) and one medium (dry ingredients))
- Box grater (or food processor – to grate the zucchini)
- Cooling rack
Ingredients
Dry ingredients
- oat flour 1 ½ cups
- ground flaxseed 2 tbsp
- baking powder 1 tsp
- baking soda ½ tsp
- salt ½ tsp
- cinnamon 1 ½ tsp
Wet ingredients
- eggs 2 large
- Greek yogurt (plain) ⅓ cup
- olive oil ¼ cup
- applesauce (unsweetened) ¼ cup
- vanilla extract 1 tsp
- pure stevia powder ⅛ tsp
- zucchini (grated, lightly squeezed in a paper towel to remove excess water) 1 cup
Add-ins
- walnuts (chopped ) ¼ cup
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Cooking Tips
- Let Batter Rest: Allow the batter to sit for 5–10 minutes before baking. This hydrates the oat flour and helps with structure.
- Avoid Overmixing: Oat flour can become gummy if overmixed — gently fold ingredients together.
- Squeeze Zucchini Lightly: Don’t over-squeeze, as a bit of moisture is needed for soft texture.
- Check for Doneness: Insert a toothpick deep into the center — it should come out clean or with a few moist crumbs.
- Customize Add-ins: Swap walnuts with pumpkin seeds for nut-free, or add dark chocolate chips for a sweeter version.
- Make it Dairy-Free: Use plant-based Greek-style yogurt like coconut or almond yogurt.
- Storage: Keeps 3–4 days at room temp or up to a week in the fridge; freeze slices individually for longer storage.
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Instructions
- Preheat the oven to 350°F (175°C). Line a 9×5-inch loaf pan with parchment or grease lightly.
- In a medium bowl, whisk together oat flour, flaxseed, baking powder, baking soda, salt, and cinnamon.1 ½ cups oat flour, 2 tbsp ground flaxseed, 1 tsp baking powder, ½ tsp baking soda, ½ tsp salt, 1 ½ tsp cinnamon
- In a large bowl, whisk eggs, yogurt, oil, applesauce, vanilla, and stevia until smooth.2 large eggs, ⅓ cup Greek yogurt, ¼ cup olive oil, ¼ cup applesauce, 1 tsp vanilla extract, ⅛ tsp pure stevia powder
- Add dry ingredients to wet and stir gently until just combined — don’t overmix.
- Fold in grated zucchini and walnuts. Let the batter sit 5–10 minutes before baking so it hydrates — this gives it more lift and less gumminess.Batter should be thick but scoopable.1 cup zucchini, ¼ cup walnuts
- Spread into the prepared pan and smooth the top.
- Bake 50–55 minutes, or until a toothpick inserted in the centre comes out clean.
- Let it cool for at least 20 minutes in the pan, then transfer to a wire rack to finish cooling before slicing.
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FAQ
- Can I make this recipe gluten-free?
Yes, as long as the oat flour is certified gluten-free, this recipe is naturally gluten-free. - Can I make this dairy-free?
Yes. Substitute Greek yogurt with a plain, unsweetened dairy-free yogurt alternative. - What can I use instead of eggs?
You can try flax eggs (1 tbsp ground flaxseed + 2.5 tbsp water per egg) but note the texture may be slightly more dense. - Is this suitable for people with diabetes?
Yes, in moderation. It contains no refined sugars and uses oat flour, which is higher in fibre. Portion control is key. - Can I leave out the walnuts?
Yes, they're optional. You can also replace them with seeds or omit entirely for a nut-free version. - How do I store leftovers?
Store in an airtight container at room temperature for up to 2 days, or refrigerate for longer freshness. It also freezes well.
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Nutrition
Per serving
Calories: 172.2kcal
Carbohydrates: 14.5g
Fiber: 2.1g
Sugar: 1.4g
Fat: 10.6g
Saturated Fat: 1.6g
Trans Fat: 0.004g
Protein: 5.5g
Nutrition Facts
Healthy Oat Flour Zucchini Bread (No Sugar Added)
Serving Size
1 slice
Amount per Serving
Calories
172.2
% Daily Value*
Fat
10.6
g
16
%
Saturated Fat
1.6
g
10
%
Trans Fat
0.004
g
Cholesterol
37.5
mg
13
%
Sodium
235.2
mg
10
%
Potassium
153.2
mg
4
%
Carbohydrates
14.5
g
5
%
Fiber
2.1
g
9
%
Sugar
1.4
g
2
%
Protein
5.5
g
11
%
Vitamin C
2.3
mg
3
%
Vitamin D
0.2
µg
1
%
Calcium
58.2
mg
6
%
Iron
1.2
mg
7
%
Magnesium
40.7
mg
10
%
Zinc
0.9
mg
6
%
* Percent Daily Values are based on a 2000 calorie diet.
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