Transform that last stubborn bit of peanut butter into a delightful and nutritious breakfast with these ingenious Peanut Butter Jar Overnight Oats! This brilliant recipe combines wholesome oats, ripe bananas, and your favorite milk directly inside an almost-empty peanut butter jar, creating the most delicious, quick, and effortlessly easy breakfast waiting for you in the morning. It’s the ultimate solution to breakfast prep and food waste, all in one delightful jar.

The Smart Solution for a Delicious & Healthy Breakfast
We’ve all been there: staring at an almost-empty jar of peanut butter, a mere smear coating the sides, yet too much to simply toss, but too little to easily scoop. This common kitchen dilemma often leads to a sticky situation – literally! Do you attempt an awkward, knuckle-deep excavation, or grudgingly relegate the jar to the recycling bin, feeling a pang of guilt about the wasted goodness? Well, prepare to say goodbye to that conundrum forever with our brilliant Peanut Butter Jar Overnight Oats recipe. This isn’t just a breakfast; it’s a culinary hack that turns potential waste into a wholesome, convenient, and incredibly tasty meal.
This innovative approach leverages the remaining peanut butter in the jar by turning it into the flavor base for your overnight oats. Simply add oats, mashed bananas, and milk, give it a good shake, and let the magic happen in your refrigerator overnight. By morning, you’ll awaken to a creamy, flavorful breakfast that’s ready to eat, completely eliminating the mess and the waste. It’s a truly practical, delicious, and environmentally conscious alternative that will make you wish you went through peanut butter quicker!
Unlock More Peanut Butter Delights!
Eager to try this fantastic overnight oats recipe but your peanut butter jar isn’t quite empty enough for the “scrape-the-sides” method? Don’t worry, we’ve got you covered! There are plenty of delectable ways to enjoy that extra peanut butter. Why not whip up a batch of our 4-Ingredient Flourless Peanut Butter Cookies? They’re wonderfully chewy with a delightful crunch, and absolutely irresistible. Or perhaps a cool, creamy, and decadent No-Bake Peanut Butter Pie sounds like the perfect treat? These recipes are perfect for using up more of that delicious spread, getting your jar ready for its next life as an overnight oats vessel.

Effortless Preparation for Busy Mornings
The beauty of Peanut Butter Jar Overnight Oats lies in its unparalleled simplicity. With just a few staple ingredients – oats, peanut butter, mashed bananas, and milk – you can create a wholesome, filling, and customizable breakfast that practically makes itself. It genuinely doesn’t get any easier! The key to achieving the perfect consistency is maintaining a simple 1:1 ratio of oats to milk. This ensures your oats absorb enough liquid to become wonderfully creamy without being too thin or too thick. The rest of the magic unfolds as you sleep, making your mornings incredibly stress-free.
Imagine waking up, and your breakfast is not only waiting for you but is also packed with nutrients and flavor. We love enjoying our overnight oats cold, straight from the fridge – it’s a refreshing and quick start to the day. However, if you prefer a warm and hearty meal, a quick 45-second zap in the microwave will transform them into a comforting hot breakfast. And for those who believe breakfast should always have a touch of indulgence, feel free to stir in a handful of mini chocolate chips – we certainly won’t stop you! This recipe is all about making your morning routine easier and more delicious.
The Nutritional Powerhouse in a Jar
Beyond convenience, Peanut Butter Jar Overnight Oats offer significant health benefits. Oats are a fantastic source of soluble fiber, which helps lower cholesterol, stabilize blood sugar levels, and keeps you feeling full longer, preventing those mid-morning cravings. Bananas add natural sweetness, potassium, and more fiber, contributing to digestive health. Peanut butter provides healthy fats and protein, which are essential for sustained energy and muscle repair. Opting for plant-based milk alternatives can also make this recipe dairy-free and vegan-friendly, accommodating various dietary preferences. This simple meal is packed with goodness, fueling your body and mind for the day ahead.

Mastering Your Peanut Butter Jar Overnight Oats: Step-by-Step
Crafting these delicious overnight oats is incredibly straightforward. Here’s how you can make the most of your almost-empty peanut butter jar and prepare a fantastic breakfast:
- Gather Your Ingredients: Ensure you have your favorite old-fashioned oats, your preferred milk (dairy or non-dairy works beautifully), and ripe bananas ready. The riper the banana, the sweeter and more easily mashed it will be, adding a wonderful natural sweetness to your oats.
- The Essential Scrape: Begin by adding your oats, milk, and mashed bananas directly into the almost-empty peanut butter jar. This is where the magic truly happens! Use a spoon or a small spatula to stir all the ingredients together, making sure to vigorously scrape along the sides and bottom of the jar. This action ensures that every last bit of peanut butter clinging to the jar is incorporated into your oat mixture, infusing it with rich, nutty flavor and ensuring no delicious morsel goes to waste.
- Shake It Up: Once stirred, secure the lid tightly onto the peanut butter jar. Give it a good, vigorous shake until all the ingredients are thoroughly combined and the peanut butter is evenly distributed throughout the mixture. This shaking method not only mixes everything perfectly but also helps to loosen any remaining peanut butter, ensuring maximum flavor extraction.

- Overnight Chill: Place the sealed jar of oats in the refrigerator and let it chill overnight, or for at least 6-8 hours. This allows the oats ample time to absorb the milk and soften, resulting in that wonderfully creamy, ready-to-eat texture.
- Serve and Customize: In the morning, your breakfast is ready! You can enjoy it cold, straight from the fridge, or warm it in the microwave for approximately 45 seconds for a comforting meal. Enhance your overnight oats with your favorite toppings. A drizzle of honey or maple syrup adds extra sweetness, while fresh berries, sliced fruit, a sprinkle of nuts, seeds, or granola can elevate both the flavor and nutritional profile. Feel free to get creative and make it your own!

Creative Topping and Flavor Variations
While delicious on their own, Peanut Butter Jar Overnight Oats are incredibly versatile and lend themselves beautifully to customization. Here are some ideas to inspire your next breakfast:
- Fruity Boost: Beyond bananas and berries, try diced apples, peaches, mango, or a swirl of apple butter or pumpkin puree for seasonal flavors.
- Nutty & Crunchy Additions: Boost texture and healthy fats with chopped almonds, walnuts, pecans, chia seeds, flax seeds, or hemp hearts. A dollop of extra peanut butter or almond butter swirled on top is always a winner.
- Sweet Indulgences: Mini chocolate chips, a drizzle of caramel, or a sprinkle of shredded coconut can turn your breakfast into a decadent treat.
- Spices & Extracts: A dash of cinnamon, nutmeg, or a drop of vanilla extract can add warmth and complexity to the flavor profile.
- Protein Power-Up: For an extra protein kick, mix in a scoop of your favorite protein powder (peanut butter flavored, perhaps!) or a spoonful of Greek yogurt before chilling.
The possibilities are endless, allowing you to create a new and exciting flavor combination every time you make your Peanut Butter Jar Overnight Oats.
Storage and Meal Prep Tips
One of the greatest advantages of overnight oats is their suitability for meal prepping. Once prepared, your Peanut Butter Jar Overnight Oats will stay fresh in the refrigerator for up to 3-4 days. This makes them perfect for preparing several servings at the beginning of the week, ensuring you have a ready-to-eat, healthy breakfast every morning. Simply grab a jar from the fridge, add your favorite fresh toppings, and you’re good to go! This not only saves time but also helps maintain a consistent healthy eating routine.
Watch the Recipe Come to Life!
Sometimes, seeing is believing! Step into the kitchen with us and watch how effortlessly these delicious Peanut Butter Jar Overnight Oats come together. Visual learners will appreciate the quick and easy demonstration:
See how easy it is to make these delicious oats in this Instagram Reel from Maegan Brown ~ The BakerMama.
If you do make these delightful Peanut Butter Jar Overnight Oats, we would absolutely love to see your creations! Be sure to snap a picture and share it with us or tag us on Instagram @thebakermama so we can see how inspired and creative you get with our recipes. Your culinary adventures truly bring us joy!
Enjoy your effortlessly delicious and healthy breakfast!
xoxo,

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Peanut Butter Jar Overnight Oats
5 Stars 4 Stars 3 Stars 2 Stars 1 Star
5 from 2 reviews
Author: The BakerMama
Prep Time: 5
Total Time: 5 minutes
Yield: 6
Description
Use that last bit of peanut butter to make incredibly easy and delicious Peanut Butter Jar Overnight Oats! Simply add oats, mashed bananas, and milk into an almost-empty jar for a quick, healthy, and waste-reducing breakfast.
Ingredients
- almost empty peanut butter jar (I used a 40 ounce*)
- 1 and 1/2 cups old-fashioned oats
- 1 and 1/2 cups milk (dairy or non-dairy)
- 2 medium ripe mashed bananas
Instructions
- Add oats, milk, and mashed bananas to your almost-empty peanut butter jar. Using a spoon or spatula, stir thoroughly to combine all ingredients, ensuring you scrape along the sides and bottom of the jar to incorporate every last bit of peanut butter into the mixture.
- Secure the jar lid tightly and shake vigorously until all ingredients are well combined and the peanut butter is evenly distributed. This helps create a smooth, consistent mixture.
- Store the sealed jar of oats in the refrigerator overnight, or for a minimum of 6-8 hours, to allow the oats to soften and absorb the liquid.
- Serve cold directly from the fridge for a refreshing breakfast, or microwave for 45-60 seconds to warm for a hearty meal. Enhance with a drizzle of honey, maple syrup, fresh berries, nuts, or seeds, if desired. Enjoy your delicious, ready-to-eat breakfast!
Notes
*For a 20 oz jar, use half the ingredients (3/4 cup oats, 3/4 cup milk, 1 medium mashed banana). Adjust milk quantity slightly if you prefer a thicker or thinner consistency. Overnight oats can be stored in the refrigerator for 3-4 days.
