The Ultimate Chocolate Peanut Butter Brownie Sundaes

5 from 1 vote

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I’m here to tell you about the richest, most decadent chocolate and peanut butter dessert that you will ever meet: The Ultimate Chocolate Peanut Butter Brownie Sundae.

Just imagine the most perfectly rich and moist brownie with peanut butter swirled on topped, smooth cold ice cream, and chopped Reese’s cups. But the magic doesn’t stop there. It isn’t just drizzled with any old hot fudge, it’s topped with peanut butter hot fudge you’ll be tempted to drink for breakfast. Dessert just got taken to a whole new level.

Picture of hot fudge being poured over a peanut butter brownie sundae
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Chocolate Peanut Butter Sundaes

Chocolate peanut butter brownies & vanilla ice cream drenched in a homemade peanut butter hot fudge sauce makes for a totally over the top and fun treat. There is never a bad way to eat a brownie, but trust me when I tell you that you need to make this sundae.

This showstopper sundae would be a delicious dessert for Sunday dinner or to celebrate a special occasion. It has all of the classic sundae vibes with the yummiest peanut butter twist. 

In order to cut down on the preparation time, I like to bake the brownies and make the hot fudge ahead of time. Then it only takes a few minutes to assemble the sundae and you are ready to dive in.

peanut butter brownie sundae in a bowl

What is the best chocolate to use for homemade brownies?

I use the Ghirardelli’s 100% cocoa bars found in the baking aisle for the unsweetened chocolate. Man, it’s good!

Does hot fudge need to be refrigerated?

Make sure that your hot fudge is completely cooled before putting it in an airtight container and placing in the refrigerator. The hot fudge will last up to 2 weeks. Simply reheat when you are ready to use the hot fudge again.

How long should I let brownies cool before cutting them?

I know that it is so tempting to jump into freshly baked brownies, but if you want a really crisp, clean cut line you need to wait until the brownies are completely cooled. This typically takes about 30 minutes and an abundance of self control. 

peanut butter brownie sundae in a bowl

More Chocolate Peanut Butter Recipes:

If you’ve tried this simple peanut butter chocolate sundae recipe or any other recipe on Bless this Mess, then don’t forget to rate the recipe and leave me a comment below! I would love to hear about your experience making it. And if you snapped some pictures of it, share it with me on Instagram so I can repost on my stories AND add your photo to your comment so that other can see your creation.

Picture of hot fudge being poured over a peanut butter brownie sundae
5 from 1 vote

The Ultimate Chocolate Peanut Butter Brownie Sundae

Chocolate peanut butter brownies & vanilla ice cream drenched in a homemade peanut butter hot fudge sauce.
Prep: 45 minutes
Total: 45 minutes
Servings: 9


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  • To assemble the brownie sundae of your dreams, just put a brownie on a plate (or three…) top with a scoop of ice cream, drizzle peanut butter hot fudge on top and then sprinkle on chopped Reese’s.
  • Enjoy with a tall glass of milk.


Serving: 1 of 9 servings, Calories: 563kcal, Carbohydrates: 94g, Protein: 8g, Fat: 18g, Saturated Fat: 5g, Polyunsaturated Fat: 3g, Monounsaturated Fat: 7g, Cholesterol: 22mg, Sodium: 363mg, Potassium: 172mg, Fiber: 1g, Sugar: 54g, Vitamin A: 264IU, Vitamin C: 0.04mg, Calcium: 93mg, Iron: 2mg
Like this recipe? Rate and comment below!

Brownies adapted from The America’s Test Kitchen Family Baking Book (One of the best cookbooks ever…)

Grab a tall glass of milk and be prepared to be amazed by Chocolate Peanut Butter Brownie Sundaes. It is everything you want in a dessert and more. Enjoy!

About Melissa

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Recipe Rating


  1. Dinnersdishesdessert (@Dinnersdishes) says:

    Not sure I could grab a spoon fast enough! Amazing!

  2. Anne@FromMySweetHeart says:

    Melissa… funny about the yoga pants but so true! I love everything about this sundae. But that peanut butter fudge is the best part. Yes….I’ll just need a spoon! Love your photos! : )

  3. Tara says:

    I am counting down the days until I am off the doctor ordered super strict diet! It can’t come soon enough!!!

  4. Ashton says:

    Good grief!! I think I need this…

  5. Carol | a cup of mascarpone says:

    Melissa, I’ve been waiting for this post ever since seeing your tease to all the chocolate party members! You did not disappoint! This is incredible, and your photos are absolutely awesome!

  6. Nancy @ gottagetbaked says:

    Holy mother of mercy – that is the most beautiful thing I’ve seen in a long time. My arteries just constricted and I feel like I’ve gained five pounds by looking at these photos but I don’t care – I want to eat that now! Your brownies look perfectly rich, moist and dense. And you’re right, if I made that sauce, I’d want to drink it. So dangerous!

  7. Georgia | The Comfort of Cooking says:

    I think this is what chocolate heaven looks like! Great recipes!

    1. Melissa says:

      Thanks Georgia!

  8. Becky says:

    Oh, I have to say, this one looks good. I usually am an oreo fan, but I think this one tops the pile!

  9. thatskinnychickcanbake says:

    I’ve been WAITING patiently for this recipe. Wow! What a showstopper!!!

    PS…I was born in South Bend, but my parents moved to Iowa when I was an infant. Now back to being a full fledged Hoosier (my dad always called me his “Hoosier Hotshot” growing up)! So fun to have the Indiana connection 🙂

  10. Paula @ Vintage Kitchen says:

    A picture is worth a thousand words sometimes… it´s so decadent and the flavors are so perfect together! The best sundae in a long time!