This oatmeal and yogurt cake has become one of those quietly reliable bakes that I keep coming back to when I want something wholesome, quick, and not overly sweet. It lands right in that sweet spot between breakfast and dessert, which is probably why it’s so popular with home bakers looking for a flourless cake that still feels satisfying. The oats soften as they bake, the banana keeps the crumb tender, and the yogurt gives the cake a gentle tang that makes the fruit taste even brighter.

I tested this a few times to get the texture just right, and the biggest surprise was how much better it turned out after a short rest. Straight from the oven it’s delicate, but after cooling, it slices cleanly and holds together much better. If you’re looking for a simple sugar-free cake that uses pantry staples and bakes up with a cozy aroma of cinnamon, apple, and orange, this one is a keeper.

Why You’ll Love This Recipe

• Naturally sweetened with banana, apple, and raisins, so it feels wholesome without added sugar
• Flourless and made with rolled oats, which gives it a hearty, tender texture
• Easy to mix in one bowl with no special equipment needed
• A great way to use up ripe fruit and leftover yogurt
• Tested texture note: letting it cool fully makes slicing much easier and prevents crumbling
• Works well for breakfast, a snack, or a light dessert

Ingredients

• 1 cup (90 g) rolled oats
• 2 large eggs
• 1/4 cup (50 g) plain yogurt
• 2/3 cup (150 ml) milk
• 1 medium ripe banana, mashed, about 1/2 cup (120 g)
• 1 medium apple, peeled if desired and diced, about 1 cup (120–130 g)
• 1/4 cup (30 g) raisins
• 1/2 teaspoon ground cinnamon
• 1/2 cup (50 g) chopped walnuts
• 1 teaspoon orange zest, packed

Ingredient Notes

Rolled oats work best here because they soften nicely while still giving the cake structure. Quick oats can be used in a pinch, but the texture will be softer.

Plain yogurt adds moisture and a light tang. I prefer full-fat or Greek-style yogurt for the richest texture, but regular yogurt works too.

The banana does most of the natural sweetening, so make sure it’s ripe with brown speckles. Under-ripe banana will make the cake taste flatter.

The apple should be diced fairly small so it bakes through evenly. A firm, sweet-tart apple like Honeycrisp, Fuji, or Gala works well.

Walnuts add a nice contrast to the soft crumb. If you skip them, the cake will still work, but it will be less textured.

Orange zest is small but important. It brightens the flavor and keeps the cake from tasting too heavy.

Kitchen Tools Needed

• Mixing bowl
• Fork or whisk
• Rubber spatula or spoon
• 8-inch or 9-inch round cake pan or small square pan
• Parchment paper
• Knife and cutting board
• Measuring cups and spoons

Step-by-Step Instructions

1. Preheat the oven to 350°F (180°C). Line an 8-inch or 9-inch cake pan with parchment paper, leaving a little overhang if possible for easier lifting later.

2. In a large bowl, whisk together the rolled oats, eggs, yogurt, and milk until combined. The mixture will look loose at first, which is normal. Let it sit for 5 minutes so the oats can begin absorbing some of the liquid.

3. Stir in the mashed banana, diced apple, raisins, cinnamon, chopped walnuts, and orange zest. Mix until everything is evenly distributed. The batter should be thick but spoonable, not dry.

4. Pour the mixture into the prepared pan and spread it into an even layer. Press any apple pieces that are sitting on top gently into the batter so they bake more evenly.

5. Bake for 28 to 35 minutes, or until the top is set, lightly golden, and a toothpick inserted in the center comes out clean or with just a few moist crumbs. If your oven runs hot, start checking around 27 minutes.

6. Let the cake cool in the pan for 10 to 15 minutes. Then lift it out and cool it completely on a wire rack before slicing. The texture firms up a lot as it cools.

Pro Tips

• Let the oat mixture rest before baking. This short pause makes the oats soften and gives the cake a better, less gritty texture.
• Dice the apple small. Large chunks can stay too firm while the rest of the cake bakes.
• Don’t skip the cooling time. I found the cake slices much neater once it had fully cooled.
• If your banana is very large, use about 1/2 cup (120 g) mashed banana. Too much banana can make the cake overly soft.
• For a slightly more dessert-like finish, serve it with a spoonful of yogurt on top.
• If the top browns too quickly, loosely cover it with foil for the last 8 to 10 minutes.

Common Mistakes to Avoid

• Adding too much liquid. The batter should be moist, but not soupy.
• Cutting the cake too soon. My first attempt fell apart because I sliced it while it was still warm.
• Using very large apple pieces. They can make the cake uneven and underbaked in spots.
• Overbaking. It should be set, not dry. Oats firm up as the cake cools.
• Skipping parchment paper. This cake is tender, and lining the pan makes removal much easier.

Variations

• Add chopped dates instead of raisins for a deeper caramel-like sweetness.
• Swap walnuts for pecans or almonds for a slightly different crunch.
• Add 2 tablespoons (15 g) shredded coconut for a more fragrant, bakery-style flavor.
• Mix in a few blueberries or chopped pear for a seasonal twist.

Serving Suggestions

Serve this cake slightly warm or at room temperature. It’s lovely on its own, but I also like it with extra yogurt, a drizzle of honey if you are not keeping it sugar-free, or a few fresh apple slices on the side. For brunch, it pairs well with coffee or tea.

Storage Instructions

Store leftovers in an airtight container in the refrigerator for up to 4 days. Because of the fruit and yogurt, refrigeration is the safest option. If you want to keep it longer, freeze individual slices wrapped tightly and stored in a freezer bag for up to 2 months.

Reheating Tips

Warm slices in the microwave for 15 to 20 seconds, or in a 300°F (150°C) oven for about 8 minutes. Reheating brings back the soft, comforting texture without drying it out.

Nutrition Estimate

Per serving, based on 8 servings:

• Calories: 185
• Protein: 6 g
• Carbohydrates: 24 g
• Fat: 8 g

Recipe Summary Card

• Prep Time: 15 minutes
• Cook Time: 30 minutes
• Total Time: 45 minutes
• Servings: 8
• Cuisine: Home-style
• Course: Breakfast, Snack, Dessert
• Calories: 185 per serving

Frequently Asked Questions

Can I use quick oats instead of rolled oats?

Yes, but the texture will be softer and a little less hearty. Rolled oats give the best structure.

Can I make this cake without walnuts?

Yes. You can leave them out or replace them with sunflower seeds, pumpkin seeds, or another nut if you prefer.

Does the apple need to be peeled?

No, peeling is optional. If the skin is thin, you can leave it on. For a softer finish, peeling works better.

Can I make this in advance?

Yes. In fact, it tastes even better after resting for a few hours because the flavors settle and the cake slices more cleanly.

Is this cake very sweet?

It is lightly sweet, not dessert-sweet. The banana, apple, and raisins provide enough sweetness for most people.

Conclusion

This oatmeal and yogurt cake is the kind of simple, practical recipe that proves wholesome baking can still be genuinely satisfying. It’s easy to make, forgiving, and full of cozy flavor from fruit, cinnamon, and orange zest.

Tested Note

I tested this with both warm and fully cooled slices, and the cooled version held together much better. The orange zest also stood out more after the cake rested for a few minutes.