High-Protein Peanut Butter Overnight Oats

Featured in: Weekend Farmhouse-Style Treats

These overnight oats combine creamy peanut butter with protein powder and Greek yogurt for a breakfast that keeps you full for hours. The oats soften overnight in the refrigerator, absorbing the flavors of vanilla and a touch of honey or maple syrup.

Perfect for busy mornings, this nourishing bowl comes together in just 10 minutes of prep time. Customize with your favorite fruits, nuts, or chocolate chips for added texture and flavor. The result is a velvety, satisfying meal that tastes like dessert while delivering 40 grams of protein per serving.

Updated on Sun, 01 Feb 2026 10:19:00 GMT
Creamy High-Protein Peanut Butter Overnight Oats topped with banana slices and chopped peanuts in a glass jar. Pin This
Creamy High-Protein Peanut Butter Overnight Oats topped with banana slices and chopped peanuts in a glass jar. | orchardflint.com

My desk drawer at work used to be filled with those sad little microwave oatmeal packets until I started meal prepping these. Now I actually look forward to breakfast, and my mornings feel ten times less chaotic. Theres something genuinely satisfying about opening the fridge and seeing breakfast already handled, especially when it tastes like a treat.

Last month my brother tried to steal my jar from the office fridge, thinking it was some fancy store-bought breakfast. When I told him Id thrown it together the night before, he looked genuinely betrayed. Now he texts me every Sunday night asking if Im meal prepping.

Ingredients

  • Old-fashioned rolled oats: These soak up liquid beautifully and maintain a nice chew, unlike instant oats which can turn mushy and sad
  • Unsweetened milk: Soy or pea milk will boost your protein numbers, but whatever you choose, make sure its something you actually enjoy drinking
  • Greek yogurt: This adds creaminess and about 12 grams of protein per serving while keeping the texture luxurious
  • Natural peanut butter: The kind that separates is perfect here, it melts into the oats and creates those PB and J vibes we all secretly love
  • Protein powder: Vanilla or unflavored works, but avoid anything with strong artificial flavors that might clash with the peanut butter
  • Honey or maple syrup: Start with less since the fruit and toppings will add natural sweetness
  • Pure vanilla extract: This little detail makes everything taste more cohesive and homemade
  • Fine sea salt: Just a pinch wakes up all the flavors and prevents the oats from tasting flat

Instructions

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Grab your jar:
Any clean container with a tight lid works, but 12 to 14 ounces gives you enough room to stir without making a mess
Build the base:
Dump in your oats along with any powders, seeds, or spices youre using, making sure to distribute the salt evenly
Whisk the wet team:
In a separate bowl, combine your milk, yogurt, peanut butter, vanilla, and sweetener until completely smooth and no lumps remain
Bring it together:
Pour the liquid mixture over the dry ingredients and stir like you mean it, scraping the bottom to ensure no dry pockets are hiding
Check your consistency:
The oats should look soupy now, not thick, since theyll absorb liquid overnight, so add a splash more milk if needed
Add the fun stuff:
Stir in any sturdy add-ins like chocolate chips or diced fruit now, saving delicate berries for morning
The waiting game:
Seal it up and let it hang out in the fridge for at least four hours, though overnight is really the sweet spot
Morning remix:
Give it a good stir and add another splash of milk if it looks too thick, then go wild with your toppings
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Golden High-Protein Peanut Butter Overnight Oats layered with fresh blueberries, ready to grab and go for breakfast. Pin This
Golden High-Protein Peanut Butter Overnight Oats layered with fresh blueberries, ready to grab and go for breakfast. | orchardflint.com

My roommate started making these after watching me prep them for weeks, but she kept adding double the oats. One morning she texted me a picture of the thickest, driest overnight oats Id ever seen. We still laugh about it whenever we see the oats container in the pantry.

Make It Your Own

Sometimes I swap the peanut butter for almond butter when I want something more subtle, and other times I go all in with chocolate protein powder and call it dessert for breakfast. The base formula is forgiving enough that you can experiment without risking disaster.

Texture Secrets

Chia seeds are your friend if you like a pudding consistency, while steel-cut oats will give you more chew but need slightly more liquid. Ive found that the liquid ratio on the conservative side is better, because you can always thin it out in the morning.

Batch Prep Magic

On Sundays, I line up five jars and assembly-line the process, which takes maybe fifteen minutes total. My weekdays feel exponentially more manageable knowing breakfast is literally grab-and-go.

  • Use a wide-mouth jar so you can actually stir everything without spilling
  • Mix your dry ingredients in bulk on Sunday to save even more time
  • Wait to add fresh toppings until youre ready to eat so nothing gets soggy
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Mason jar of High-Protein Peanut Butter Overnight Oats drizzled with honey, paired with a spoon on a rustic table. Pin This
Mason jar of High-Protein Peanut Butter Overnight Oats drizzled with honey, paired with a spoon on a rustic table. | orchardflint.com

Theres something incredibly grown-up about having a breakfast that fuels you properly without requiring morning brain power. Your future self will thank you.

Recipe FAQs

How long do these oats keep in the refrigerator?

These overnight oats stay fresh for up to 2 days when stored properly in a sealed container. For best texture and flavor, enjoy within 24-48 hours. Add delicate fresh fruits like berries just before serving rather than storing them mixed in.

Can I use different types of milk?

Absolutely. Dairy milk, soy milk, pea milk, almond milk, or oat milk all work beautifully. Soy and pea milk provide the highest protein content if you're looking to maximize that nutrient. The thickness may vary slightly depending on your choice.

What protein powder works best?

Vanilla or unflavored whey protein powder blends seamlessly into the mixture. Plant-based options like pea protein or vanilla protein powder also work well. Avoid heavily flavored varieties that might overpower the peanut butter taste.

How can I make this vegan?

Swap Greek yogurt for a plant-based alternative, choose dairy-free milk like soy or oat milk, use maple syrup instead of honey, and select a vegan protein powder. The result is just as creamy and satisfying.

Why are my oats too thick or too thin?

Oats absorb liquid differently based on the brand and type. If too thick, stir in another tablespoon of milk before serving. If too thin, reduce the liquid by 1-2 tablespoons in your next batch or add chia seeds, which gel and create a thicker consistency.

Can I heat these up?

Yes, though they're designed to be enjoyed cold. If you prefer warm oats, transfer to a microwave-safe bowl and heat in 30-second intervals, stirring between each. Add a splash of milk if needed to restore creaminess.

High-Protein Peanut Butter Overnight Oats

Creamy peanut butter overnight oats with protein powder, Greek yogurt, and vanilla. A rich, satisfying breakfast ready in minutes.

Time to Prep
10 minutes
Time to Cook
480 minutes
Overall Time
490 minutes
Created by Luke Campbell


Skill Level Easy

Cuisine Type American

Makes 1 Portions

Dietary Details Suitable for Vegetarians

What You’ll Need

Base

01 ½ cup old-fashioned rolled oats
02 ¾ cup unsweetened milk of choice
03 ¼ cup plain Greek yogurt
04 2 tablespoons natural peanut butter
05 1 scoop vanilla or unflavored protein powder
06 1 to 2 teaspoons honey or maple syrup
07 ½ teaspoon pure vanilla extract
08 Pinch of fine sea salt
09 1 to 2 tablespoons water or extra milk as needed

Optional Add-Ins

01 1 tablespoon chia seeds or ground flaxseed
02 ½ teaspoon ground cinnamon
03 2 to 3 tablespoons diced banana, berries, or apple
04 1 tablespoon mini dark chocolate chips or cacao nibs
05 1 tablespoon chopped roasted peanuts

Toppings

01 1 tablespoon peanut butter or reconstituted powdered peanut butter
02 Fresh fruit such as banana slices, strawberries, or blueberries
03 Dollop of Greek yogurt
04 Toasted nuts or seeds such as peanuts, almonds, or pumpkin seeds
05 Drizzle of honey or maple syrup
06 Pinch of flaky sea salt

Step-by-Step Guide

Step 01

Prepare container: Select a clean jar or container with a tight-fitting lid with 12 to 14 ounce capacity

Step 02

Combine dry ingredients: Add rolled oats to the jar. Stir in chia seeds, flaxseed, cinnamon, and protein powder if using. Add a pinch of salt

Step 03

Mix wet ingredients: In a separate bowl, whisk together milk, Greek yogurt, peanut butter, vanilla extract, and honey or maple syrup until smooth. Add 1 to 2 tablespoons water or extra milk if the mixture is too thick

Step 04

Combine wet and dry: Pour the peanut butter mixture over the oats and dry ingredients. Stir very thoroughly, ensuring there are no dry pockets

Step 05

Adjust consistency: If the mixture is very thick, add a splash more milk and stir again

Step 06

Add sturdy toppings: Stir in sturdy fruits or chocolate chips if using. Reserve delicate fruits to add just before serving

Step 07

Refrigerate: Seal the container and refrigerate for at least 4 hours, preferably overnight for 8 to 12 hours

Step 08

Finish and serve: In the morning, stir well and check the consistency. Add more milk if desired. Top with peanut butter, fresh fruit, yogurt, nuts or seeds, and honey or maple syrup. Sprinkle with flaky sea salt if desired

Step 09

Storage: Enjoy straight from the jar or transfer to a bowl. Refrigerated leftovers keep for up to 2 days. Add fresh fruit just before serving

Needed Gear

  • Jar or container with lid 12 to 14 ounces
  • Mixing bowl
  • Whisk or spoon

Allergy Advisory

Review all ingredients for allergens. Check with a health expert if you have concerns.
  • Contains peanuts
  • Contains dairy if using dairy milk or yogurt
  • Possible tree nuts if used in recipe
  • Soy if using soy milk or certain protein powders
  • Gluten present unless using certified gluten-free oats
  • Always check labels on protein powder and yogurt for potential allergens

Nutrition Details (per portion)

This data is provided for your reference. Always consult with a healthcare professional for nutrition advice.
  • Caloric Value: 600
  • Fats: 22 grams
  • Carbohydrates: 54 grams
  • Proteins: 40 grams