Slow Cooker Peanut Butter Fudge

This Slow Cooker Peanut Butter Fudge is rich, creamy, sweet, and incredibly easy to make. Instead of standing over the stove and worrying about scorching sugar, the slow cooker gently melts the ingredients together until the mixture becomes smooth and glossy.

Peanut butter gives the fudge a deep nutty flavor, while white chocolate and sweetened condensed milk create that soft, melt-in-your-mouth texture. A little vanilla and salt balance the sweetness and make every bite taste even richer.

This recipe is perfect for holidays, Christmas candy trays, parties, bake sales, edible gifts, or anytime you want a simple homemade dessert with minimal hands-on work.

Why You Will Love This Recipe

This fudge does not require a candy thermometer, complicated sugar syrup, or constant stirring. Most of the work happens right in the slow cooker.

The ingredients are simple and easy to find, and the finished fudge cuts into neat squares after chilling.

It is also easy to customize with chocolate chips, chopped peanuts, pretzels, caramel, or a sprinkle of flaky salt.

Ingredients

2 cups creamy peanut butter
3 cups white chocolate chips
1 can sweetened condensed milk, 14 ounces
2 tablespoons unsalted butter
1 teaspoon vanilla extract
1/4 teaspoon salt

Optional Toppings

Chopped roasted peanuts
Mini chocolate chips
Flaky sea salt
Crushed pretzels
Peanut butter chips
Chocolate drizzle

Ingredient Notes

Peanut butter: Standard creamy shelf-stable peanut butter works best because its texture is consistent. Natural peanut butter can separate and may produce softer or oilier fudge unless it is stirred extremely well before measuring.

White chocolate chips: White chocolate gives the fudge structure and adds sweetness. Use a good-quality brand that melts smoothly.

Sweetened condensed milk: Be sure to use sweetened condensed milk rather than evaporated milk. The two products are not interchangeable in this recipe.

Butter: A small amount of butter improves the texture and gives the finished fudge a richer flavor.

Vanilla and salt: Vanilla rounds out the peanut butter flavor, while salt keeps the fudge from tasting overly sweet.

How to Make Slow Cooker Peanut Butter Fudge

Line an 8-inch square baking pan with parchment paper, leaving some overhang on the sides.
Lightly grease the parchment if desired.
Add the white chocolate chips to the slow cooker.
Add the creamy peanut butter, sweetened condensed milk, and butter.
Cover and cook on low for approximately 45 minutes.
Open the slow cooker and stir the mixture thoroughly.
Continue cooking on low for another 15 to 30 minutes if necessary, stirring every 10 to 15 minutes.
Once the white chocolate is fully melted and the mixture is smooth, turn off the slow cooker.
Stir in the vanilla extract and salt.
Mix until the fudge is completely smooth and glossy.
Pour the mixture into the prepared baking pan.
Spread it evenly with a silicone spatula.
Add any optional toppings while the fudge is still soft.
Allow the pan to cool at room temperature for about 30 minutes.
Transfer it to the refrigerator and chill for at least three to four hours, or until completely firm.
Lift the fudge from the pan using the parchment paper.
Cut into small squares with a sharp knife.

Important Slow Cooker Tip

White chocolate can scorch if it becomes too hot, even in a slow cooker. Use the low setting and begin checking the mixture early.

Do not leave the fudge mixture cooking unattended for several hours. The slow cooker is being used as a gentle melting method rather than for traditional long slow cooking.

Stir regularly once the chocolate begins softening so the ingredients melt evenly.

How to Get Smooth Peanut Butter Fudge

Use room-temperature peanut butter when possible. Very cold peanut butter takes longer to blend smoothly into the melted chocolate.

Stir thoroughly but gently once the chocolate has melted. Continue mixing until there are no visible streaks of white chocolate or condensed milk.

If the mixture seems unusually thick, this is generally normal. Fudge should be much thicker than cake batter when transferred to the pan.

Avoid adding milk or water because even a small amount can interfere with the texture and setting.

How to Cut Clean Fudge Squares

Chill the fudge completely before cutting. Soft fudge will drag and stick to the knife.

Use a large sharp knife and wipe the blade clean between cuts.

For especially neat squares, warm the knife briefly under hot water, dry it completely, and slice through the chilled fudge.

Because this candy is rich, smaller pieces are usually better than large portions.

Easy Variations

For chocolate peanut butter fudge, replace one cup of the white chocolate chips with semi-sweet chocolate chips.

For crunchy peanut butter fudge, use crunchy peanut butter or fold chopped roasted peanuts into the melted mixture.

For salted peanut butter fudge, sprinkle flaky sea salt over the top before chilling.

For peanut butter pretzel fudge, press crushed pretzels into the surface for a salty, crunchy contrast.

For peanut butter cup fudge, chop mini peanut butter cups and press them gently into the top after spreading the fudge in the pan.

For a chocolate swirl, drizzle melted dark or milk chocolate over the surface and swirl it gently with a toothpick.

What to Serve with Peanut Butter Fudge

Serve the fudge as part of a holiday dessert tray with cookies, brownies, truffles, and homemade candies.

It is also excellent with coffee, hot chocolate, or cold milk.

For gifting, place individual squares in small paper candy cups and arrange them in a decorative airtight box.

Make-Ahead Instructions

Peanut butter fudge is an excellent make-ahead dessert because it keeps well after setting.

You can prepare it several days before a holiday or party and keep it refrigerated until needed.

For the best texture, let chilled fudge sit at room temperature for about 10 minutes before serving.

Storage and Freezing

Store the fudge in an airtight container in the refrigerator for up to two weeks. Place parchment or wax paper between layers to prevent the pieces from sticking together.

The fudge can also be stored at cool room temperature for several days, although refrigeration keeps it firmer.

For longer storage, freeze the fudge in a freezer-safe container for up to two months. Separate the layers with parchment paper.

Thaw the fudge overnight in the refrigerator before serving.

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