Name: Keto Peanut Butter Banana Protein Fudge - super easy sugar free snack!
Prep time: 5 min
Total time: 2 h 5 min
Yield: 18
Cuisine: American
Ingredients: 1/2 cup butter (1 stick); 1/2 cup no sugar added peanut butter, creamy; 2 scoops Isopure Zero Carb banana cream protein powder; 1/2 cup Swerve confectioners sweetener; 2 teaspoon banana extract

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If you have a sweet tooth, try this keto peanut butter banana protein fudge. Not only is it low carb, it’s also high in protein and very delicious. This keto fudge is sweet but filling and 1 piece has 90 calories, 4.1g protein and 0.7g net carbs!

You might also like this keto chocolate salted caramel protein protein bites.

white dish with pieces of keto banana peanut butter fudge with a colorful yellow cloth and copper measuring spoons — This post contains affiliate links. For more information visit our policies page.

I am on a keto fudge kick lately. Part of the reason is that my father in law really likes sweets but he’s a diabetic so sugar free fudge is a treat he can eat. And of course I have a sweet tooth so honestly I really enjoy it too and it’s super easy so why not?

Today I was playing around and made this keto peanut butter banana protein fudge. This recipe takes no time at all to whip up though you have to let it freeze to get hard. You only need a few ingredients, it’s high in protein, low in carbs and sugar free for those watching your sugar. One piece of this low carb fudge is only 0.7g net carbs and 4.1g of protein.

white dish and glass container with pieces of sugar free banana peanut butter fudge with a colorful yellow cloth and copper measuring spoons

What You Need To Make Easy Sugar Free Fudge

The basic ingredients to make sugar free fudge are butter, nut butter and Swerve confectioners sweetener. So for this recipe I used peanut butter for the nut butter and in addition for the banana flavor I use IsoPure banana protein powder and banana extract.

I recommend both of these specific ingredients because the peanut butter is very overpowering so you need a lot of banana flavor and because these products have 0 carbs.

banana peanut butter protein fudge ingredients: no sugar added peanut butter, butter, Swerve sweetener, Isopure banana protein powder, banana extract — Make sure to use no sugar added peanut butter for less carbs. Also the Swerve confectioners sweetener mixes better than granular.

Let’s Make Some Protein Fudge!

If you’ve seen my other keto fudge recipes you know that all you need to do is whip together the ingredients and spread it in a pan to freeze.

Today I use a food processor and added the peanut butter, Swerve sweetener, banana protein powder, butter and banana extract and then mixed until nice and creamy like below.

You could also use a mixer but for some reason I decided on the mini food processor because I was used to using this when I made my other fudge recipes and had to grind nuts to make the nut butter.

bowl of a food processor with keto protein fudge batter — I used a food processor to make this protein fudge but you can also use a mixer.

Next spread the fudge batter into a baking dish or container of choice and freeze for an hour or two until hard.

NOTE: I usually just spoon it right into a baking dish but my last batch I actually put a piece of parchment paper to cover the bottom and hang over the sides. It was SO MUCH EASIER to get out that I will be doing that from now on.

glass container with sugar free protein fudge ready to go in the freezer

Recipe Tips & Notes

For the peanut butter, make sure you use the lowest carb peanut butter you can find. I like Aldi’s Simply Nature no sugar added creamy peanut butter.
I also really like Swerve confectioner sweeter as it mixes well whereas granular sweetener may make it grainy because you are not heating it to make it dissolve.
You can use any protein powder you want, but I like IsoPure banana because it has 0 carbs and the banana flavor is a nice addition.
The banana extract is necessary to add maximum banana flavor because peanut butter can be overpowering.
I like to store this fudge in the freezer. You can also store it in the refrigerator but it will last longer in the freezer. You cannot however keep it on the counter because it will get too soft.
To make it easier to get out of the container, put a piece of parchment paper to cover the bottom and hang over the sides. Then you can just lift it out of the container and cut into pieces.

closeup of a little dish with pieces of sugar free banana peanut butter protein fudge with the ingredients in the background — Each piece of this sugar free peanut butter banana protein fudge has 4.1g of protein and 0.7g of net carbs. I find it not only very tasty but also filling.

Other Keto Fudge & Protein Recipes

I’m starting to create a collection of these low carb, sugar free fudge recipes as well as keto sweets with protein powder. There is something about protein powder that really fills me up and adds flavor without carbs. Here are a few of my favorite fudge and protein added recipes.

closeup of a piece of sugar free fudge with a bite taken out of it — Store this keto fudge in the freezer or refrigerator. It may be too soft if left out.

Well if you haven’t tried this easy keto fudge recipe I hope you give it a try. It’s soooo easy and yummy. I have one more recipe coming up and then I’m going to have to stop making it as it’s becoming an obsession!

The nutritional information for 1 piece is: 90 calories / 8.2g fat / 1.2g carbs / 0.5g fiber / 0.7g net carbs

You might also like my friend Cassidy’s keto fudge recipe so go check it out.