There’s a reason this Peanut Butter Banana Crockpot Oatmeal lives on my slow-cooker rotation: it’s effortless, comforting, and reliably crowd-pleasing. You set it up the night before, sleep, and wake to a warm, creamy pot of breakfast that smells like cinnamon and toasted oats. No stirring during the cook. No worrying about burned oatmeal on the stove. Just simple ingredients, steady heat, and time.
I like it because the flavors are straightforward and forgiving. Very ripe bananas bring natural sweetness; peanut butter adds body and a cozy, nutty depth; flax adds a little texture and nutrition. A single heatproof bowl inside the crockpot creates a gentle bain-marie cook that turns steel-cut oats into tender, slightly chewy perfection without babysitting.
Below you’ll find a clear ingredient list (with quick notes), the exact step-by-step method used on repeat in my kitchen, and practical tips for swaps, storage, and troubleshooting. No fluff—just how to make a reliable, delicious breakfast you’ll actually want to eat every morning.
What Goes In
- 2 very ripe bananas, mashed — natural sweetener and creamy binder; the riper, the sweeter and more aromatic.
- 1/4 cup peanut butter — adds richness, flavor, and a silky mouthfeel; use creamy for the smoothest texture.
- 3 cups milk — the cooking liquid; whole milk gives a creamier result, but any milk will work.
- 3 tablespoons Truvia Brown Sugar Blend — sweetens and gives a brown-sugar note; adjust to taste if you prefer more or less.
- 1 teaspoon cinnamon — warms the flavor profile and pairs beautifully with banana and peanut butter.
- 1 teaspoon vanilla — brightens and balances the oats’ natural starchiness.
- 2 tablespoons flax seed — adds a subtle nuttiness and thickens the final oatmeal slightly; good source of fiber.
- 1 cup steel-cut oatmeal — the base grain; gives a chewy, substantial texture that holds up well to long, slow cooking.
- Bananas for topping — optional fresh fruit for texture and presentation.
- Truvia Brown Sugar Baking Blend for topping — a finishing sprinkle if you like a touch more sweetness and crunch.
Peanut Butter Banana Crockpot Oatmeal: From Prep to Plate
- In a medium heatproof mixing bowl, add the 2 very ripe mashed bananas and 1/4 cup peanut butter. Use a hand mixer to blend until smooth and combined.
- Add 3 cups milk, 3 tablespoons Truvia Brown Sugar Blend, 1 teaspoon cinnamon, 1 teaspoon vanilla, and 2 tablespoons flax seed to the bowl. Mix until evenly combined.
- Stir in the 1 cup steel-cut oatmeal until distributed throughout the mixture.
- Place the bowl upright in the crock pot. Pour water into the crock pot around the outside of the bowl until the water level is about 1 inch below the rim of the bowl (do not add water into the bowl). Cover the crock pot.
- Cook on LOW for 7–8 hours.
- Carefully remove the bowl from the crock pot using oven mitts. Stir the oatmeal until smooth and evenly combined.
- Serve topped with sliced bananas and Truvia Brown Sugar Baking Blend.
Why Cooks Rave About It
Long, slow cooking transforms steel-cut oats in a way quick stovetop cooks can’t. The crockpot’s low, even heat breaks down the oats gradually and allows the flavors—banana, peanut butter, cinnamon, vanilla—to meld. The bain-marie technique (bowl inside a water-filled crockpot) prevents scorching and creates a custard-like texture without constant stirring.
It’s also wildly practical. Set it before bed and you’ve got hot breakfast waiting in the morning. It’s great for families, meal-prep, or when you want a hands-off weekend brunch. Finally, the flavor profile is nostalgic and satisfying: kid-friendly with just enough sophistication for grown-ups who like their breakfast to taste like a treat, not a science experiment.
If You’re Out Of…
- Peanut butter — almond butter or sunflower seed butter work as one-to-one swaps for a similar texture and richness.
- Truvia Brown Sugar Blend — brown sugar, coconut sugar, or maple syrup can substitute; start with an equal sweetness level and adjust after cooking.
- Milk — any plant milk (almond, oat, soy) is fine; expect slight texture and flavor differences. Thicker milks give a creamier result.
- Flax seed — chia seeds can be swapped, though they absorb more liquid; you may see a thicker set-up.
- Steel-cut oatmeal — if you only have rolled oats, reduce the cook time and check earlier; the texture will be softer and less toothsome.
Before You Start: Equipment
- Slow cooker/crockpot — large enough to fit a medium mixing bowl inside comfortably.
- Medium heatproof mixing bowl — metal, glass, or ceramic that can withstand the slow cooker’s heat.
- Hand mixer — for smoothing the mashed bananas and peanut butter quickly; a whisk also works with more elbow grease.
- Oven mitts or heatproof gloves — essential for safely removing the hot bowl from the crockpot.
- Spoon or spatula — sturdy enough to stir thick oatmeal.
Steer Clear of These
- Putting the oat mixture straight into the crockpot without a bowl — direct contact can lead to uneven cooking or scorching, especially with steel-cut oats.
- Overfilling the crockpot with water — water should be about 1 inch below the rim of the bowl; too much risks water spilling into the oatmeal.
- Opening the lid repeatedly — every time you lift the lid you lose heat and increase cook time; trust the 7–8 hour LOW window.
- Using under-ripe bananas — they won’t provide as much natural sweetness or flavor; ripeness matters here.
How to Make It Lighter
- Use lower-fat milk — swap whole milk for 2% or skim to reduce calories while keeping the base the same.
- Reduce or replace peanut butter — cut the peanut butter to 2 tablespoons or use a powdered peanut butter reconstituted with water to lower fat content.
- Cut back on sweetener — reduce the Truvia Brown Sugar Blend by 1 tablespoon or omit it and rely on bananas for sweetness.
- Add more fiber, less calorie-dense bulk — fold in extra mashed banana or a spoonful of unsweetened applesauce if you want more volume without extra fat.
Pro Tips & Notes
- Choose very ripe bananas — look for lots of black flecking on the peel. They blend smoother and taste sweeter.
- Mashing vs. blending — a hand mixer gives silkier results than a fork. If you like visible banana bits, mash by hand.
- Consistency preferences — this recipe yields creamy but slightly chewy oats. If you prefer softer oatmeal, add an extra 1/4–1/2 cup milk and stir after cooking to adjust.
- Make-ahead strategy — the setup is perfect for overnight prep: do steps 1–4 the night before and refrigerate the bowl in the crockpot, then top up the water and cook in the morning. If you refrigerate the assembled bowl, add 30–60 extra minutes to the cook time from cold.
- Flavor boosts — a pinch of salt during mixing lifts the flavors. Toasted nuts or a drizzle of nut butter over the finished bowl enhances texture and richness.
- Serving temperature — stir briskly to break up any set parts and create a uniform texture before serving.
Keep It Fresh: Storage Guide
Cool the oatmeal to room temperature before storing. Transfer to an airtight container and refrigerate for up to 4 days. Reheat in the microwave with a splash of milk, stirring halfway, or warm gently on the stovetop over low heat, adding milk as needed to loosen the texture. Portions reheat best when stirred frequently to prevent sticking.
If you want to freeze portions, spoon cooled oatmeal into freezer-safe containers, leaving some headspace. Freeze up to 3 months. Thaw overnight in the fridge and reheat with a little liquid to refresh the texture.
Questions People Ask
- Can I use quick oats? — Quick oats will cook much faster and become very soft. You can use them, but reduce cook time significantly and expect a different texture.
- Do I have to use a bowl inside the crockpot? — Yes. The bowl creates a water bath that prevents direct high heat and keeps the oats from sticking or burning.
- Is flax seed necessary? — No, but it adds a nutritional boost and helps thicken the oats slightly. You can omit it if you prefer.
- Can I sweeten it differently? — Absolutely. Maple syrup, honey, or a different brown sugar will work. Adjust quantity to taste.
- Will this be too sweet for kids? — With very ripe bananas and the listed amount of Truvia blend, it’s pleasantly sweet without being cloying. Reduce sweetener for younger palates.
That’s a Wrap
This Peanut Butter Banana Crockpot Oatmeal is one of those recipes that makes mornings easier and happier. It’s forgiving, tactile, and perfect for batch breakfasts. Once you try the bowl-in-crockpot approach with steel-cut oats, you’ll see why it’s become a staple—minimal fuss, maximum comfort.
Make it your own by adjusting the sweetness, swapping nut butters, or topping with whatever fruit and crunch you love. Set it, forget it, and come back to a warm, wholesome start to the day.
Peanut Butter Banana Crockpot Oatmeal
Ingredients
Ingredients
- 2 very ripe bananasmashed
- 1/4 c.peanut butter
- 3 c.milk
- 3 TbspTruvia Brown Sugar Blend
- 1 tspcinnamon
- 1 tspvanilla
- 2 TbspFlax Seed
- 1 c.steal cut oatmeal
- Bananasfor topping
- Truvia Brown Sugar Baking Blendfor topping
Instructions
Instructions
- In a medium heatproof mixing bowl, add the 2 very ripe mashed bananas and 1/4 cup peanut butter. Use a hand mixer to blend until smooth and combined.
- Add 3 cups milk, 3 tablespoons Truvia Brown Sugar Blend, 1 teaspoon cinnamon, 1 teaspoon vanilla, and 2 tablespoons flax seed to the bowl. Mix until evenly combined.
- Stir in the 1 cup steel-cut oatmeal until distributed throughout the mixture.
- Place the bowl upright in the crock pot. Pour water into the crock pot around the outside of the bowl until the water level is about 1 inch below the rim of the bowl (do not add water into the bowl). Cover the crock pot.
- Cook on LOW for 7–8 hours.
- Carefully remove the bowl from the crock pot using oven mitts. Stir the oatmeal until smooth and evenly combined.
- Serve topped with sliced bananas and Truvia Brown Sugar Baking Blend.
Equipment
- Mixing Bowl
- Hand Mixer
- Crock Pot
- Oven mitts
Notes
Note - You can also put the mixture directly into the crock pot and not use a bowl and water bath, but the sides of the mixture will be crunchy.
