Here is a recipe for the easiest, creamiest 2-Ingredient Peanut Butter Fudge. It is incredibly rich, dangerously simple to make, and requires no candy thermometer or complicated steps. It’s a perfect last-minute dessert or gift.
2-Ingredient Peanut Butter Fudge
This recipe is a true magic trick. It uses the natural oils in peanut butter to seize up the melted frosting, creating a perfectly sliceable fudge with a smooth, melt-in-your-mouth texture.
Ingredients (Makes 16-25 pieces, depending on size)
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16 oz (1 standard tub or 3 1/2 cups) Creamy Peanut Butter (Do not use “natural” or homemade peanut butter that separates; use regular shelf-stable peanut butter like Jif or Skippy for the correct texture.)
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16 oz (1 standard tub) Vanilla Frosting (Store-bought, ready-to-spread frosting works perfectly. You can use classic vanilla or cream cheese frosting for a different twist.)
Instructions
Step 1: Prepare the Pan
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Line an 8×8 inch square baking pan with parchment paper. Leave some overhang on two opposite sides. This will act as handles to easily lift the fudge out later.
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If you don’t have parchment, you can lightly grease the pan with butter or non-stick spray.
Step 2: Melt the Ingredients
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Add both the peanut butter and the vanilla frosting to a medium-sized, microwave-safe bowl.
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Microwave in 30-second intervals, stirring vigorously with a spatula after each interval.
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Continue heating and stirring until the mixture is completely smooth, combined, and slightly thinned out. This usually takes about 90 seconds to 2 minutes total. Do not overheat or boil.
Step 3: Transfer and Chill
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Immediately pour the warm, smooth mixture into the prepared pan.
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Use your spatula to spread it into an even layer, pushing it into the corners.
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Tap the pan gently on the counter a few times to release any air bubbles.
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Place the pan in the refrigerator and let it chill, uncovered, for at least 2-3 hours, or until it is completely firm and set.
Step 4: Slice and Serve
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Once firm, use the parchment paper overhang to lift the entire block of fudge out of the pan.
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Place it on a cutting board. Use a large, sharp knife to cut it into small squares. (For clean cuts, wipe the knife clean between slices).
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Store the fudge in an airtight container in the refrigerator. It will keep for up to 2 weeks… if it lasts that long!
Tips & Variations
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Chocolate Peanut Butter Fudge: Use Chocolate Frosting instead of vanilla.
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Add Crunch: Stir in 1/2 cup of chopped peanuts (or even crushed pretzels) just before pouring the mixture into the pan.
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Fluffy Texture: Fold in 1 cup of marshmallow fluff after melting the peanut butter and frosting for a lighter, fluffier fudge.
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Salted Caramel Finish: For a gourmet touch, sprinkle a little flaky sea salt (like Maldon) over the top right after pouring it into the pan.