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Crunchy Peanut Butter & Jelly Keto Fat Bombs

These Crunchy Peanut Butter and Jelly Fat Bombs transform the classic PB&J sandwich into a healthier, protein-packed treat. They make a great grab-and-go dessert or snack you can meal-prep for the week. Naturally sweetened and very simple to make, these fat bombs deliver the familiar peanut butter and jelly flavor with added crunch and a satisfying texture.

Stack of crunchy peanut butter and jelly fat bombs

Peanut Butter and Jelly Fat Bombs

Peanut butter and jelly is a timeless pairing, and these fat bombs capture that nostalgia while keeping the recipe simple and flexible. The base is a creamy peanut butter layer studded with chopped peanuts for crunch, sweetened lightly, and set in a cupcake liner. A spoonful of warmed jelly is swirled on top to create the classic PB&J flavor profile in a compact bite.

These cups are perfect for anyone who wants a portable, portioned dessert that still satisfies the craving for peanut butter and jam. They work well for low-carb or keto plans when you choose sugar-free jam and a keto-friendly liquid sweetener instead of maple syrup. They are also easily adaptable to different nut butters and flavor variations.

Bowl of peanut butter and jelly fat bomb batter

Related Peanut Butter and Jelly Recipes

  • Peanut Butter and Jelly Protein Smoothie
  • PB and J Swirl Energy Balls
  • PB & J Overnight Oats

These fat bombs are one of many creative ways to enjoy the peanut butter + jelly combination. For this recipe we used crunchy peanut butter and chopped peanuts for texture, but you can switch to creamy peanut butter or another nut butter if you prefer.

Here’s What You Need

  • Coconut oil (melted)
  • All-natural peanut butter (or your preferred nut butter)
  • Chopped peanuts (for crunch and topping)
  • All-natural jam or preserves (or a sugar-free keto jam for low-carb)
  • Maple syrup (or liquid stevia for a keto option)
  • Vanilla extract
  • Sea salt (to taste)
  • Nonstick cupcake liners and a muffin tin
Hand holding a peanut butter and jelly nut butter cup

Ingredients

Peanut Butter Layer (bottom layer)

  • 2/3 cup all-natural peanut butter (creamy)
  • 1/4 cup melted coconut oil
  • 1 teaspoon vanilla extract
  • 1/4 cup maple syrup (or 1/4 teaspoon liquid stevia for a keto option)
  • 1/4 cup chopped peanuts (+ more for topping)
  • Sea salt, to taste

Jelly Layer (top layer)

  • 1/4 cup jelly or preserves (any flavor you like, or a keto-friendly jam)

Instructions

  1. Line a muffin tin with nonstick cupcake liners and set aside.
  2. In a medium bowl, combine the peanut butter, melted coconut oil, vanilla extract, maple syrup (or stevia), chopped peanuts, and a pinch of sea salt. Mix until smooth and evenly combined. If the mixture is too thick to scoop easily, add a little more melted coconut oil, one teaspoon at a time, until it reaches a scoopable consistency.
  3. Using a tablespoon, scoop a heaping tablespoon of the peanut butter mixture into each lined muffin cup. Distribute evenly across 12 liners and press gently to flatten the top slightly.
  4. Place the jelly or preserves in a small microwave-safe bowl and warm for 30 to 60 seconds until it loosens for easy drizzling. Stir well.
  5. Carefully drizzle about 1 teaspoon of jelly over the top of each peanut butter cup. Use a toothpick or fork to swirl the jelly into the peanut butter slightly, creating a marbled effect.
  6. Sprinkle additional chopped peanuts on top if desired, then transfer the muffin tin to the freezer. Freeze for about 20 minutes or until the fat bombs are firm.
  7. Once solid, remove the cups from the liners and store in an airtight container in the freezer. Allow one or two minutes at room temperature before eating for a softer texture, or enjoy straight from the freezer for a firm bite.

Tips & Notes

  • If your batter is too thick to scoop, add more melted coconut oil a teaspoon at a time. Nut butters vary in oil content, so consistency can change based on the brand.
  • For a keto-friendly version, use a sugar-free jam and replace the maple syrup with liquid stevia or another low-carb sweetener.
  • Try different nut butters—almond butter or cashew butter both work well and offer a different flavor profile.
  • Store fat bombs in the freezer for up to 3 months. Thaw in the refrigerator or at room temperature for a few minutes before serving.
  • To reduce sugar, use a low-sugar or homemade jam and adjust the sweetener in the peanut butter layer to taste.
  • These are easy to scale: double the recipe for a larger batch or halve it for fewer servings. They’re ideal for meal prep and portion control.

Serving Ideas

Enjoy these fat bombs as a quick dessert, an afternoon pick-me-up, or a pre/post-workout treat if you need a portable source of fat and a little protein. Pair one with a piece of fruit or a small serving of Greek yogurt for a more substantial snack.

Nutrition

Calories: 131 kcal, Carbohydrates: 11 g, Protein: 4 g, Fat: 9 g, Fiber: 9 g, Sugar: 8 g

Nutrition information is an approximation and can vary depending on the specific brands and ingredients you use.

Small image of peanut butter cups

If you make these crunchy peanut butter and jelly fat bombs, consider photographing your creations and sharing them on social media with a relevant hashtag. They’re a fun, nostalgic way to enjoy the PB&J combination in a snackable, make-ahead format.