This quick-to-prep peanut butter baked oatmeal makes mornings simple and delicious. Made with fewer than 10 wholesome ingredients and mixed in one bowl, this baked oats recipe is a family-friendly breakfast that reheats well. Finish with a drizzle of peanut butter or a sprinkle of mini chocolate chips for an extra treat.
1 Bowl Healthy Peanut Butter Baked Oatmeal Recipe
If you love peanut butter cookies, you’ll enjoy this baked peanut butter oatmeal. It layers peanut flavor from both creamy peanut butter and peanut butter powder for a rich taste in every bite.
This recipe also provides a satisfying source of protein thanks to the peanut butter, powdered peanut butter, and eggs. It’s fast to assemble, easy to make ahead, and perfect for busy school mornings.
We make this regularly because everyone in the house loves it, it keeps people satisfied, and it’s straightforward to prepare.
Why you’ll love this healthy baked oatmeal recipe
Healthy breakfast – Oats provide complex carbohydrates, and the peanut butter and eggs add healthy fats and protein, making this a balanced start to the day.
Minimal prep time – Everything mixes in one bowl, so prep is fast and cleanup is easy.
Great for meal prep – This bake stores well in the fridge, so you can make it ahead and reheat individual portions for quick mornings.
Simple ingredients you need for this peanut butter oatmeal bake
See the recipe card below for exact quantities, nutrition information, and step-by-step instructions.
- unsweetened almond milk (or any milk of choice)
- natural peanut butter
- eggs
- maple syrup
- vanilla extract
- old-fashioned rolled oats
- peanut butter powder
- baking powder
- sea salt
- coconut oil (for greasing)
How to make this 1 bowl baked oats recipe
Step 1: Preheat the oven to 350°F. Grease an 8″x8″ square baking dish with oil.
Step 2: In a large bowl combine the milk, peanut butter, eggs, maple syrup, and vanilla extract. Whisk until smooth.
Step 3: Stir in the oats, peanut butter powder, baking powder, and sea salt until evenly incorporated.
Step 4: Pour the mixture into the prepared dish and bake 40–45 minutes, or until the top looks set and no longer wet.
Step 5: Let the bake cool for 10–20 minutes before slicing. Top with a drizzle of peanut butter, chocolate chips, or fresh berries and serve.
Watch me make PB baked oatmeal
A full how-to video is embedded below for visual guidance.
Try these different flavors
Chocolate peanut butter: replace the peanut butter powder with unsweetened cocoa powder and fold in chocolate chips.
Peanut butter banana: substitute mashed ripe banana for the maple syrup and add banana slices on top before baking.
Peanut butter & jelly: swirl your favorite jam on top of the batter before baking for a classic combo.
Fresh fruit option: top with fresh berries for a lighter, fruity take.
How to store
This baked oatmeal keeps well and is ideal for meal prep. After cooling to room temperature, cover the whole pan or cut into individual portions and store in an airtight container in the fridge.
It will keep up to 7 days. Reheat in the oven, air fryer, or microwave.
Substitutions, optional variations & dietary adjustments
Here are easy swaps to suit dietary needs or personal taste:
Milk: Use oat, coconut, soy, or cow’s milk instead of almond milk.
Peanut butter: Any nut or seed butter works—almond or sunflower butter are tasty alternatives.
Eggs: For an egg-free version, use a flax egg (1 tbsp ground flax + 3 tbsp water per egg). The texture will be slightly more crumbly.
Sweetener: Honey, agave, or brown sugar can replace maple syrup.
Oats: Old-fashioned rolled oats are best; quick oats will also work. Avoid steel-cut oats for this recipe.
Peanut butter powder: Swap for oat flour or a scoop of protein powder if you don’t have PB powder.
Greasing oil: Avocado oil or another neutral oil can be used instead of coconut oil.
More oatmeal recipes you’ll love
- Zucchini baked oatmeal
- Banana egg oat pancakes
- High protein overnight oats
1 Bowl Healthy Peanut Butter Baked Oatmeal Recipe
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Ingredients
- 2 cups unsweetened almond milk
- 1/2 cup natural peanut butter
- 2 eggs
- 1/4 cup maple syrup
- 2 tsp vanilla extract
- 2 cups old-fashioned rolled oats
- 1/4 cup peanut butter powder
- 1 tsp baking powder
- 1/2 tsp sea salt
- melted coconut oil, for greasing the baking dish
Instructions
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Preheat oven to 350°F and grease an 8″x8″ baking dish.
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Whisk milk, peanut butter, eggs, maple syrup, and vanilla in a large bowl until combined.
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Stir in oats, peanut butter powder, baking powder, and sea salt until mixed through.
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Pour into the prepared dish and bake 40–45 minutes, or until set and no longer wet on top.
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Cool 10–20 minutes, slice, and top with peanut butter, chocolate chips, or berries before serving.
Video
Nutrition
Nutrition information is automatically calculated and should be used as an approximation.
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XO
Heather