Name: Peanut Butter M&M Blondies Recipe
Prep time: 10 min
Cook time: 25 min
Total time: 35 min
Ingredients: ½ cup unsalted butter (melted); 1 cup light brown sugar; 1 large egg; 1 teaspoon vanilla extract; ½ cup peanut butter; ¼ teaspoon salt; 1 cup all-purpose flour; 1 ½ cups M&Ms

These Peanut Butter M&M Blondies are the perfect combination of peanut butter and chocolate. We love them warm with a scoop of ice cream!

Sometimes I just want peanut butter and M&Ms (okay not sometimes… everyday).

I decided to make something fast and easy so I could have these two amazing ingredients together.

I served some right out of the oven with some ice cream on top. With the rest, I let them cool and then ate them the next day!

We aren’t huge chocolate lovers at our house, so having a peanut butter cookie with just the right amount of chocolate made these the perfect dessert.

Recipe Ingredient Notes

To make Peanut Butter M&M Blondies, you will need the following ingredients:

Unsalted butter, melted
Light brown sugar
Large egg
Vanilla extract
Peanut butter
Salt
All-purpose flour
M&Ms

Equipment Needed

For this recipe, you only need a few simple kitchen tools. We recommend using the following equipment:

Peanut Butter M&M Blondie dough in a glass mixing bowl.

M&M's on top of Peanut Butter M&M Blondie dough in a glass bowl.

How to make Peanut Butter M&M Blondies

Preheat oven to 350℉ and line an 8×8 baking dish with parchment paper or aluminum foil and lightly grease with cooking spray. Set aside
In a large bowl, combine the melted butter and light brown sugar. Mix thoroughly. Add in the egg and vanilla extract.
Mix in the peanut butter and make sure all of the wet ingredients are thoroughly mixed.
Add in the salt and flour. Then gently mix in 1 cup of M&M’s.
Spread the brownie mixer in the baking dish and spread out evenly with a plastic spatula. Sprinkle ½ cup of M&M’s on top and press into the batter.
Bake for 20-25 minutes or until a tooth pick inserted in the middle comes out clean.

Storage Suggestions

If you manage to have any leftover Bars + Brownies, these can store well if prepped appropriately. Once they have cooled completely, here is how you can store it:

Refrigerator: Place in an airtight container and refrigerate for up to 1 week. Let them come to room temperature before serving for the best texture and flavor.
Freezer: To freeze, make sure bars and brownies are completely cooled and unfrosted. Wrap tightly in plastic wrap (or Press & Seal) and then place in a freezer-safe bag or container. For easier portioning, wrap individual squares before freezing. Don’t forget to label with the date. They’ll stay fresh in the freezer for up to 3 months.
Counter: Store bars and brownies in an airtight container at room temperature for up to 4 days. If your kitchen is particularly warm, consider refrigerating instead to prevent them from getting too soft or melty.

What is a Blondie?

Haven’t heard of blondies? Welcome to a whole new world of dessert!

Blondies are basically the non-chocolate version of brownies. Most blondies have a sugar, peanut butter, or plain base with delicious fillings.

The consistency of a blondie is a lot different than a cookie. Definitely more on the gooey and delicious bar side of desserts.

How to make Peanut Butter M&M Blondies:

Let’s get baking! Here are the step by step instructions on making our Peanut Butter M&M Blondies:

Preheat oven to 350 degrees and line an 8×8 baking dish with parchment paper or aluminum foil and lightly grease with cooking spray.
In a large bowl, combine the melted butter and light brown sugar. Mix thoroughly. Add in the egg and vanilla extract.
Mix in the peanut butter and make sure all of the wet ingredients are thoroughly mixed.
Add in the salt and flour. Then gently mix in 1 cup of M&M’s.
Spread the brownie mixer in the baking dish and spread out evenly with a plastic spatula.
Sprinkle 1/2 cup of M&M’s on top and press into the batter.
Bake for 20-25 minutes or until a toothpick inserted in the middle comes out clean.

Enjoy More Delicious Blondies Recipes

There’s nothing better than an easy brownie or bar recipe. Check out our comprehensive list of brownies, bars, and blondies here.

Peanut Butter M&M Blondies Recipe

5 from 2 votes

These Peanut Butter M&M Blondies are the perfect combination of peanut butter and chocolate. We love them warm with a scoop of ice cream!

9 Servings

Prep Time 10

Cook Time 25

Total Time 35

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Ingredients

Equipment

Instructions

Preheat oven to 350℉ and line an 8×8 baking dish with parchment paper or aluminum foil and lightly grease with cooking spray. Set aside
In a large bowl, combine the melted butter and light brown sugar. Mix thoroughly. Add in the egg and vanilla extract.
Mix in the peanut butter and make sure all of the wet ingredients are thoroughly mixed.
Add in the salt and flour. Then gently mix in 1 cup of M&M's.
Spread the brownie mixer in the baking dish and spread out evenly with a plastic spatula. Sprinkle ½ cup of M&M's on top and press into the batter.
Bake for 20-25 minutes or until a tooth pick inserted in the middle comes out clean.

Notes

If you’d like to double this recipe, we recommend doing so in a 9×13” pan, rather than a cookie sheet. This will keep them thick and chewy.

Nutrition

Calories: 501 kcal · Carbohydrates: 61 g · Protein: 8 g · Fat: 26 g · Saturated Fat: 13 g · Polyunsaturated Fat: 3 g · Monounsaturated Fat: 6 g · Trans Fat: 1 g · Cholesterol: 53 mg · Sodium: 170 mg · Potassium: 152 mg · Fiber: 2 g · Sugar: 47 g · Vitamin A: 423 IU · Vitamin C: 1 mg · Calcium: 75 mg · Iron: 2 mg

Cuisine: American

Cost: $8

Author: Steph Loaiza

Course: Dessert

Did You Make This Recipe?We’d love to hear your thoughts! Leave a review or a question in the comment section below the post.

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Questions & Reviews

Krista says:

Does this recipe require any baking soda or baking powder? I've never had a baking recipe without using either of those so I was just curious. Thanks!
Donna Howard says:

Hello Krista, I just made these, exactly as the recipe (no baking soda/powder) and they turned out great!! Very easy - very fast (they were put together by the time my oven had pre-heated!!) and very yummy!!! Our local firemen get this treat today!!
Krista says:

Thank you! Can't wait to try these
Emily says:

Did you use mini M&Ms in this recipe?
Cyd says:

We used mini M&M's but regular sized ones will work just fine too.
Carson says:

If I were double this recipe, would you say a 9X13 is big enough or should I use a sheet cake pan?
Cyd says:

I would put them in a 9 x 13 inch pan. I think the cookie sheet pan would be too big. Watch it closely and it may need a tiny bit longer to cook. They will be a little thicker if you double it and put it in a 9 x 13. Hope this helps.
Traca says:

Disappointed in this recipe. I am a good baker and mine I did in an 8x8 Pyrex pan, lined with foil and after 40 minutes of baking took them out because my toothpick came out clean, cut them and the very outer edges crumble and the rest seems underbaked. Is this how a blonde should be?
Cyd says:

They shouldn't be undercooked, but blondies are on the gooey side. Not cake like.
Mari Contrerad says:

What brand/kind of peanut butter did you use?
Cyd says:

We use store brand (Kroger) and name brand peanut butter in this recipe. They all work the same. We usually buy Jif or Skippy when buying the store brand. We haven't used natural peanut butter in this recipe, so we aren't sure how the outcome would be with that.
Meredith says:

I just made these and they turned out perfectly! I will definitely be using this recipe again! Soooo easy and fool proof (because I accidentally did some things out of order.) took 25 minutes exactly to bake.
Jen says:

How long do you leave these to cool before taking them from the tray ?
Cyd says:

You should be fine after about 20 minutes. You can cut right into them after about 5 minutes if you want to eat them warm and slightly softer. They are delicious either way.
Chrissy says:

That's exactly what happened to me, def disappointed.
Alexandra Austin says:

when making a double batch in the 9x13” pan, how long should it bake for at 350 degrees ?
Cyd says:

You will need to watch it closely so it doesn't burn but is cooked through. It should be close to the same cooking time.
Nc says:

So delicious, I have a homebased baked goods business and I would love to make these. Would that be alright, I never give out the recipe. Thank you.
Cyd says:

Sure, we just ask that you link back to our site.
Hnewbie says:

My bake time was nearly doubled with an 8x8 pan lined with parchment paper. Looks like it will be good though! My batter was finished before by oven preheated.