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No Bake Peanut Butter Oatmeal Bars have a crunchy, buttery brown sugar oatmeal top and bottom with a fudgy peanut butter filling. They’re easy to make and whip up in just 20 minutes!

overhead view of peanut butter oatmeal bars with chocolate drizzle

When it’s hot outside, I avoid turning on the oven at all costs. Here in Florida we have central air conditioning, but the oven still heats up the entire kitchen and living area, and then it takes hours for the house to cool down.

It’s just easier to make a dessert that doesn’t require oven time, lol.

I’ve been making Chocolate Oatmeal Bars for years, and No Bake Peanut Butter Oatmeal Bars is a spin off that. Here instead of a fudgy chocolate filling, we use a blend of white chocolate and peanut butter. These bars have the same fudgy texture, but they aren’t so overwhelmingly chocolate-flavored.

Of course a little drizzle of dark chocolate on top pairs well with the peanut butter filling. And just a sprinkling of sea salt balances everything.

These no bake bars go beyond a good dessert for summertime gatherings. They’re quick and easy to make and always a crowd-pleaser. Whip them up for your next party!

peanut butter oatmeal bars

Why You’ll Love This Recipe

  • The best part about these delicious oatmeal bars is how easy they are to make. There’s no baking required, so you don’t have to worry about heating up the kitchen.
  • These have great texture with a crunchy top and bottom and a soft, fudgy filling.
  • Peanut butter is the star of the show, but a hint of chocolate is the perfect accent!
peanut butter bars recipe

The Best No Bake Peanut Butter Oatmeal Bars

Ingredients

Top and Bottom Oat Mixture:

  • Unsalted butter
  • Light brown sugar
  • Salt
  • Old-fashioned rolled oats
  • Pure vanilla extract

Peanut Butter Filling:

  • White chocolate chips
  • Creamy peanut butter

Toppings:

  • Semi-sweet chocolate chips
  • Flaky sea salt

Step-by-Step Instructions

Step 1: Toast the Oats for the Top and Bottom:

toasting oats

Add the butter, brown sugar, and salt to a medium saucepan over medium heat. Cook until the butter is melted, stirring occasionally. Stir in the oats and vanilla and cook until the oats are toasted, about 2 to 3 minutes, stirring occasionally.

Add half of the oat mixture to a loaf pan lined with 2 pieces of parchment paper. Spread it out evenly, and then press it down with a metal spatula.

Step 2: Make the Filling:

white chocolate and peanut butter in glass bowl

Melt the white chocolate chips and peanut butter together in a medium bowl in the microwave or double boiler. Stir to combine.

pressing oats into pan

Pour the white chocolate/peanut butter mixture on top of the oat mixture in the loaf pan. Spread it out evenly.

Step 3: Add the Topping and Chill:

bars ready to refrigerate

Sprinkle the remaining oat mixture on top.

Refrigerate until set, about 2 hours.

Step 4: Finishing Touches:

Cut into bars, and then drizzle the melted semi-sweet chocolate on top. Sprinkle on the flaky sea salt. Serve!

Storage

Store leftovers in an airtight container in the fridge for up to 5 days.

peanut butter oatmeal squares

Tips

  • These bars have a more solid consistency straight from the fridge. If you let them sit at room temperature for 15 minutes, they have a fudgy consistency. Don’t leave them outside in the heat because they will melt.
  • For a chocolate filling instead, mix together 1 cup of semi-sweet chocolate chips + 1/2 cup of heavy whipping cream.
no bake oatmeal bars graphic

No Bake Oatmeal Bars FAQs

How Do You Freeze Oatmeal Bars?

Once these are cut into squares, arrange them in layers between pieces of parchment paper in an airtight container. Freeze them for up to 3 months, and thaw in the fridge overnight before eating.

How Can I Make These Into Chocolate Oatmeal Bars?

If you’re looking for a fudgy chocolate oatmeal bar, this recipe is perfect. All you need to do is swap out the filling!

Instead of using white chocolate chips and peanut butter, use 1 cup of semi-sweet chocolate chips + 1/2 cup heavy whipping cream. Melt it together and proceed with the recipe.

no bake bars

More Easy Dessert Recipes to Make

no bake bars with peanut butter filling

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No Bake Peanut Butter Oatmeal Bars

5 from 1 vote
Prep Time15 minutes
Cook Time5 minutes
Other Time2 hours
Yields: 8 servings
No Bake Peanut Butter Oatmeal Bars have a crunchy, buttery brown sugar oatmeal top and bottom with a fudgy peanut butter filling. They’re easy to make and whip up in just 20 minutes!

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Ingredients
 

Top and Bottom Oat Mixture:

Peanut Butter Filling:

Toppings:

Instructions
 

  • Line a 9 by 5-inch loaf pan with 2 pieces of parchment paper so it hangs over all 4 sides.
  • Add the butter, brown sugar, and salt to a medium saucepan over medium heat. Cook until the butter is melted, stirring occasionally. Stir in the oats and vanilla and cook until the oats are toasted, about 2 to 3 minutes, stirring occasionally.
  • Add half of the oat mixture to the prepared loaf pan. Spread it out evenly, and then press it down with a metal spatula.
  • Melt the white chocolate chips and peanut butter together in a medium bowl in the microwave or double boiler. Stir to combine.
  • Pour the white chocolate/peanut butter mixture on top of the oat mixture in the loaf pan. Spread it out evenly.
  • Sprinkle the remaining oat mixture on top.
  • Refrigerate until set, about 2 hours.
  • Cut into bars, and then drizzle the melted semi-sweet chocolate on top. Sprinkle on the flaky sea salt.
  • Serve.

Notes

  • Recipe Yield and Serving Size: This recipe makes 1 (9 by 5-inch) loaf pan, which is 8 servings.
  • Storage: Store leftovers in an airtight container in the fridge for up to 5 days.
  • Serving Tip: These bars have a more solid consistency straight from the fridge. If you let them sit at room temperature for 15 minutes, they have a fudgy consistency. Don’t leave them outside in the heat because they will melt.
  • For a Chocolate Filling Instead: Melt together 1 cup of semi-sweet chocolate chips + 1/2 cup of heavy whipping cream.

Nutrition

Calories: 434kcal | Carbohydrates: 38g | Protein: 7g | Fat: 29g | Saturated Fat: 14g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 9g | Trans Fat: 1g | Cholesterol: 36mg | Sodium: 316mg | Potassium: 224mg | Fiber: 3g | Sugar: 25g | Vitamin A: 374IU | Vitamin C: 1mg | Calcium: 76mg | Iron: 1mg

Nutritional information is automatically calculated and should be used as an approximate.

Course: Dessert
Cuisine: American
Keyword: No Bake Oatmeal Bars, Peanut Butter Oatmeal Bars, Peanut Butter Oatmeal Bars Recipe

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Faith, author of An Edible Mosaic.
About Faith

I’m the writer, recipe developer, photographer, and food stylist behind this blog. I love finding the human connection through something we all do every day: eat! Food is a common ground that we can all relate to, and our tables tell a story. It’s my goal to inspire you to get in the kitchen, try something new, and find a favorite you didn’t know you had.

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Recipe Rating




2 Comments

  1. I used chocolate chip and peanut butter yummy

  2. 5 stars
    How simple to make, and delicious! I made them for my 4th of July picnic and they were a hit!!

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