If you love oats but want something different from traditional oatmeal, these easy oat cakes in a jar are a fun breakfast or snack idea. The best part? You can prepare the batter in a blender, pour it into an oven-safe jar or ramekin, and bake.
Here are four delicious flavors to try: Banana, Apple Cinnamon, Blueberry, and Carrot.
Important: Use only jars or ramekins specifically rated as oven-safe. Never bake in ordinary drinking glasses or containers that aren’t designed for oven heat.
🍌 1. Banana Oat Cake
Naturally sweet and soft, this is probably the easiest recipe to start with.
Ingredients
- ½ cup rolled oats
- 1 ripe banana
- 1 egg
- ¼ cup milk
- ½ teaspoon baking powder
- ¼ teaspoon cinnamon
- ½ teaspoon vanilla extract
- Pinch of salt
How to Make It
Preheat your oven to 350°F (175°C).
Place the oats, banana, egg, milk, baking powder, cinnamon, vanilla, and salt into a blender. Blend until you have a smooth batter.
Lightly grease an oven-safe ramekin or jar and pour in the batter, leaving plenty of room at the top for the cake to rise.
Add a few banana slices on top if desired.
Bake for approximately 20–25 minutes, or until the center is set and a toothpick inserted into the cake comes out mostly clean.
Let it cool slightly before eating.
🍎 2. Apple Cinnamon Oat Cake
Apple and cinnamon are a classic combination, and they work beautifully with oats.
Ingredients
- ½ cup rolled oats
- ½ apple, chopped
- 1 egg
- ¼ cup milk
- ½ teaspoon baking powder
- ½ teaspoon cinnamon
- ½ teaspoon vanilla
- 1 teaspoon honey or maple syrup, optional
How to Make It
Add the oats, most of the apple, egg, milk, baking powder, cinnamon, vanilla, and optional sweetener to your blender.
Blend until smooth.
Pour the mixture into a greased oven-safe ramekin. Save a few small apple pieces for the top.
Bake at 350°F (175°C) for about 20–25 minutes.
For extra flavor, sprinkle a little cinnamon over the finished cake.
🫐 3. Blueberry Oat Cake
Juicy blueberries add little bursts of sweetness to this simple oat cake.
Ingredients
- ½ cup rolled oats
- 1 egg
- ¼ cup milk
- ½ ripe banana
- ½ teaspoon baking powder
- ½ teaspoon vanilla extract
- ⅓ cup blueberries
How to Make It
Blend the oats, banana, egg, milk, baking powder, and vanilla until smooth.
Here’s the important part: don’t blend all the blueberries into the batter.
Pour the batter into your oven-safe ramekin, then gently stir most of the blueberries into it. Place a few more berries on top.
Bake at 350°F (175°C) for 20–25 minutes, until the center is cooked.
You can use either fresh or frozen blueberries. If using frozen berries, the cake may need a few additional minutes.
🥕 4. Carrot Oat Cake
Think of this as a simple breakfast-inspired version of carrot cake.
Ingredients
- ½ cup rolled oats
- ⅓ cup grated carrot
- 1 egg
- ¼ cup milk
- ½ ripe banana
- ½ teaspoon baking powder
- ½ teaspoon cinnamon
- Pinch of ground ginger, optional
- 1 tablespoon chopped walnuts, optional
How to Make It
Blend the oats, banana, egg, milk, baking powder, cinnamon, and optional ginger until smooth.
Stir in the finely grated carrot after blending so the finished cake keeps some texture.
Pour into a greased oven-safe ramekin and sprinkle chopped walnuts on top.
Bake at 350°F (175°C) for approximately 22–27 minutes, or until cooked through.
🥣 The Easy Formula: Blend → Pour → Bake
All four recipes follow basically the same process:
1. BLEND the oats and wet ingredients until smooth.
2. ADD ingredients you want to keep whole, such as blueberries, grated carrot, or chopped nuts.
3. POUR into a lightly greased oven-safe ramekin.
4. BAKE at around 350°F (175°C) until the center is set.
5. COOL for a few minutes and enjoy! 😍
You can serve your oat cake with Greek yogurt, fresh fruit, nut butter, or a small drizzle of honey or maple syrup.
These little cakes are easy to customize, so once you’ve mastered the basic recipe, experiment with your favorite fruits and toppings.
Which one are you making first? 🍌 Banana, 🍎 Apple Cinnamon, 🫐 Blueberry, or 🥕 Carrot?
