Name: 1 Bowl Baked Oatmeal
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 2 cups rolled oats; 1 teaspoon baking powder; 1 teaspoon ground cinnamon; 1/4 teaspoon salt; 2 ripe bananas, mashed (or 1 cup unsweetened applesauce); 2 large eggs; 1 3/4 cups milk (dairy or non-dairy); 1/4 cup maple syrup or honey; 1 teaspoon vanilla extract; Optional: 1/2 cup chopped nuts, chocolate chips, berries, or sliced fruit

Jump to Recipe·Leave a Review

1 bowl baked oatmeal is my go-to recipe when I want a cozy, nutritious breakfast that comes together with minimal effort and cleanup. I mix everything in one bowl, pour it into a baking dish, and let the oven do the rest. It’s hearty, naturally sweetened, and easy to customize with my favorite fruits, spices, or add-ins.

Why You’ll Love This Recipe

I like this recipe because it’s incredibly simple and versatile. I can use whatever I have on hand—bananas, berries, apples, nuts, or even chocolate chips—and it still turns out delicious every time. The fact that I only need one bowl makes cleanup a breeze, and the leftovers keep well for easy breakfasts all week long. 1 Bowl Baked Oatmeal

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

Rolled oats
Baking powder
Ground cinnamon
Salt
Mashed ripe bananas or unsweetened applesauce
Eggs
Milk (dairy or non-dairy)
Maple syrup or honey
Vanilla extract
Optional: chopped nuts, chocolate chips, berries, or sliced fruit

Directions

I preheat the oven to 350°F and lightly grease a baking dish (usually 8×8 or 9×9 inches).
In a large bowl, I mash the banana (or use applesauce), then whisk in the eggs, milk, maple syrup, and vanilla extract.
I stir in the oats, baking powder, cinnamon, and salt until well combined.
If I’m using any mix-ins like berries, nuts, or chocolate chips, I fold them in gently at the end.
I pour the mixture into the prepared dish, spread it evenly, and bake for 35–40 minutes until the top is golden and the center is set.
I let it cool slightly before slicing. Sometimes I serve it warm, or I refrigerate it to enjoy cold or reheated later.

Servings and timing

This recipe serves 6–8 people. It takes me around 10 minutes to prep and 35–40 minutes to bake, so it’s ready in under an hour.

Variations

I love switching it up depending on the season. In the fall, I use pumpkin puree and add pumpkin pie spice. In summer, I go for fresh berries or peaches. If I want extra protein, I stir in a scoop of protein powder or a couple tablespoons of nut butter. For a treat, I add dark chocolate chips and shredded coconut.

storage/reheating

I store leftovers in an airtight container in the fridge for up to 5 days. To reheat, I microwave individual slices for 30–45 seconds or warm them in the oven at 300°F until heated through. I’ve also frozen slices — I just wrap them tightly and reheat straight from the freezer when needed. 1 Bowl Baked Oatmeal

FAQs

Can I make this recipe vegan?

Yes, I swap the eggs for flax eggs and use a non-dairy milk like almond or oat milk. It turns out great every time.

Is this recipe gluten-free?

As long as I use certified gluten-free oats, it’s naturally gluten-free.

Can I make this without banana?

Definitely. I often use applesauce or pumpkin puree as a substitute with similar results.

How do I make it sweeter?

If I want it sweeter, I add a bit more maple syrup or top it with fresh fruit, nut butter, or a drizzle of honey after baking.

Can I double the recipe?

Yes, I double it and bake it in a 9×13-inch dish for larger crowds or extra meal prep. I usually increase the baking time slightly—about 45–50 minutes.

Conclusion

1 bowl baked oatmeal is one of my favorite ways to enjoy a warm, healthy breakfast without the fuss. It’s endlessly adaptable, easy to prep ahead, and makes mornings so much easier. Whether I’m serving it fresh out of the oven or grabbing a slice on the go, it’s a simple comfort I come back to again and again.