Skip to Content

Easy Peanut Butter Fudge Bars

Peanut butter fudge bars deliver the perfect blend of flavors for those who love sweets. In fact, they take the peanut butter and chocolate combination to next-level deliciousness!

These easy peanut butter fudge bars are a delicious treat that the whole family will love. It’s also easy to make, so you can get the kids involved in the process.

Stack of peanut butter fudge bars on a plate

You can cut these bars as big or as small as you want, based on the number of people you’re feeding. When I bring them to potluck dinners, I cut them smaller to make sure everyone gets one.

Chocolate and Peanut Butter Together Again

I’ve always enjoyed dessert bars because they’re usually simple. These peanut butter Cocoa Krispie treats are a favorite around here. Peanut butter has always been one of my favorite foods. In fact, if I have a choice between that and almost any other flavor, there’s a good chance I’ll pick the peanut butter.

We also like these chocolate caramel pecan bars. After all, what’s not to like when you have all three of these delicious flavors in one bite? These delicious pumpkin bars are good any time of year. They’re easy to make, and they disappear quickly.


You can use regular, gluten-free, or sugar-free versions of any of these ingredients and still get great results! Here are the things you’ll need:

  • 1 package yellow cake mix (standard 2-layer size)
  • 1 cup peanut butter (creamy or crunchy)
  • 1 egg
  • 1/2 cup cooking oil
  • 1 can sweetened condensed milk (14 ounce can)
  • 1 cup semi-sweet chocolate chips
  • 2 tablespoons butter
Yellow cake mix, cooking oil, egg, peanut butter, sweetened condensed milk, butter, and chocolate chips

If you want a convenient way to print this recipe, just go to the printable recipe card at the bottom of this post.

How to Make Peanut Butter Fudge Bars

You’ll be amazed by how easy this is to make. As long as you have the right ingredients and follow the directions, it’s foolproof. First, preheat your oven to 350 and grease the bottom of a baking pan.

Next, combine the cake mix, peanut butter, oil, and egg. I like to beat the egg and then add the oil and peanut butter before pouring in the mix. But the order really doesn’t matter.

Mixing peanut butter and cake mix

After it’s mixed, pour approximately 2/3 of it into your baking pan. With the back of a firm spoon or your hands, gently press the mixture to lightly pack it. If you don’t pack it, the bars will be very crumbly and difficult to hold together.

Bottom crust pressed into pan

Put it in the oven and bake it for 10 minutes. Afterward, place it on a cooling rack while you do the next few steps.

Baked peanut butter fudge bar crust

You can either heat the rest of the ingredients in a saucepan on the stovetop or microwave it in a bowl. This time, I used the stovetop method. Combine the sweetened condensed milk, butter, and chocolate chips in a medium-size saucepan.

Chocolate chips, butter, and sweetened condensed milk in a saucepan

Place it on the stove and turn the heat on low. Stir the mixture frequently so that it doesn’t scorch. After the chocolate chips have melted and well mixed, pour it over the crust in the baking dish. Smooth it out until it is even all the way across.

Chocolate mixture smoothed over bottom crust

Finally, sprinkle the remaining cake mix and peanut butter mixture over the top and press it down just a little bit so it will stick. You’ll still be able to see the chocolate, but that’s okay.

Remaining crust crumbled on top of chocolate

Bake this for 20 minutes or until the topping has turned golden brown.

Baked peanut butter fudge bars

Remove from the oven and cool on a rack. After it cools to room temperature, cut it into squares or rectangles.

peanut butter fudge bars on a plate

Serve it for dessert or an afternoon treat. Without a doubt, your family will love this yummy treat! If you don’t eat all of these bars right away, you need to refrigerate them. Otherwise, they’ll be a melty mess.

More Yummy Dessert Recipes

Whether you’re bringing a dessert to a potluck or using dessert to bribe picky eaters to eat their veggies, it’s nice to have several delicious recipes on hand. Here are some that I make often:

Easy Apple Dump Cake – You only need 3 ingredients to make this amazing apple dump cake. Top it with ice cream or whipped cream … or eat it as-is.

spoonful of apple dump cake with whipped cream

Lemon Lush Pie – This yummy dessert is simply divine. The recipe is basically for a lemon lush, but it’s cooked in the shape of a pie so you can get those perfect wedges of dessert.

slice of lemon lush pie on a plate in front of the rest of the pie

Peanut Butter Marshmallow Bars – Peanut butter lovers will certainly go for this one! It’s easy to make and delivers a great looking dessert!

peanut butter marshmallow bar on a plate

Fabulous Fudgy Peanut Butter Bars

Peanut butter and fudge make a great combination of flavors in a single dessert. Serve them at home for dessert or bring them to your next potluck … and then watch how quickly they disappear!

Yield: 12 servings

Easy Peanut Butter Fudge Bars

Fudge bar servings on a plate

Peanut butter fudge bars are easy to make and delicious for a snack or dessert after a family dinner.

Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes


  • 1 package of yellow cake mix (regular or gluten-free)
  • 1 cup of peanut butter (creamy or crunchy)
  • 1 egg
  • 1/2 cup of vegetable oil
  • One 14-ounce can of sweetened condensed milk
  • 1 cup of semisweet chocolate chips
  • 2 tablespoons of butter


    1. Preheat oven to 350 degrees. Spray the bottom of a 13” x 9” baking pan.
    2. In a medium-size mixing bowl, combine the cake mix, peanut butter, oil, and egg. Stir until well mixed.
    3. Pour about 2/3 of this mixture into the baking pan and press it until it is lightly packed.
    4. Bake for 10 minutes. Remove from the oven and cool on a wire rack.
    5. In a saucepan, heat the sweetened condensed milk, butter, and chocolate chips on low heat until the chocolate chips are melted.
    6. Pour the mixture over the room temperature crust.
    7. Sprinkle the rest of the cake mix and peanut butter mixture over the top.
    8. Bake for 20 minutes, until the topping is golden brown.
    9. Cool and cut into square or rectangular bars.


If you prefer melting the chocolate chips in the microwave, put them in a medium-size mixing bowl with the sweetened condensed milk, butter. Heat on high for 1 minute. Remove and stir. Continue heating in 30-second increments and stirring until the chocolate chips have melted.

Store these bars in the refrigerator.

Nutrition Information



Serving Size


Amount Per Serving Calories 606Total Fat 32gSaturated Fat 10gTrans Fat 0gUnsaturated Fat 19gCholesterol 36mgSodium 500mgCarbohydrates 74gFiber 3gSugar 52gProtein 11g

The nutrition information is a product of online calculators. I try to provide true and accurate information, but these numbers are estimates.

Did you make this recipe?

Please leave a comment on the blog or share a photo on Pinterest

See this recipe shared at Meal Plan Monday, Weekend Potluck, and Full Plate Thursday.

Please feel free to share!

Miz Helen

Tuesday 5th of May 2020

I was so excited to feature you post on Full Plate Thursday,482! Thanks so much for sharing it with us and hope you will come back soon, have a great week. Miz Helen

Miz Helen

Tuesday 28th of April 2020

Your Peanut Butter Fudge Bars look amazing. Thanks so much for the mention about my Chicken Casserole, I really appreciate it! Thanks so much for sharing with us at Full Plate Thursday and please come back soon! Miz Helen


Wednesday 22nd of April 2020

OH wow! These look amazing. Pinned.


Wednesday 22nd of April 2020

Thanks, Joanne! I hope you try this recipe and enjoy them. They are so good!

Skip to Recipe