Peanut Butter Frosting

Servings: Frosts one 9×13-inch cake, 12-14 cupcakes, or fills/frosts a 2-layer 8- or 9-inch cake | Prep Time: 10 minutes

Why You’ll Love This Recipe

Peanut butter frosting is every peanut butter lover’s dream—creamy, rich, and perfectly sweet with that irresistible nutty flavor we all crave. This frosting is the perfect companion to so many cakes: chocolate, banana, vanilla, or even on its own as a dip for cookies and fruit. It’s the kind of frosting that turns an ordinary cake into something truly extraordinary.

The beauty of this peanut butter frosting is its perfect balance of flavors—sweet enough to satisfy your sweet tooth, but with enough salty peanut butter goodness to keep it from being cloying. It’s silky smooth, easily spreadable, and pipes beautifully for those picture-perfect cupcakes.

Whether you’re frosting a birthday cake, topping off some chocolate cupcakes, or just looking for a delicious spread for your morning toast, this peanut butter frosting delivers every single time. It’s simple, foolproof, and absolutely irresistible.

Ingredients

½ cup (1 stick) unsalted butter, softened
1 cup creamy peanut butter (do not use natural or old-fashioned)
2 cups powdered sugar (confectioners’ sugar), sifted
¼ cup heavy cream or whole milk
1 teaspoon vanilla extract
Pinch of salt (optional, to cut sweetness)

Directions

1. Cream the butter and peanut butter. In a large mixing bowl, beat the softened butter and peanut butter together with an electric mixer on medium speed for 2-3 minutes, until smooth, creamy, and well combined. Scrape down the sides of the bowl as needed.

2. Add vanilla and salt. Beat in the vanilla extract and salt (if using) until incorporated.

3. Gradually add powdered sugar.With the mixer on low speed, gradually add the sifted powdered sugar, about ½ cup at a time, alternating with the heavy cream or milk. Start and end with the powdered sugar.

4. Whip until fluffy. Once all the ingredients are added, increase the mixer speed to medium-high and beat for 2-3 minutes until the frosting is light, fluffy, and spreadable. If the frosting seems too thick, add more cream, a tablespoon at a time. If too thin, add more powdered sugar.

5. Use immediately. Frost your cooled cake or cupcakes right away. Store any leftover frosting in the refrigerator.

Variations

Chocolate peanut butter: Fold in ½ cup melted and cooled chocolate.
Fluffy marshmallow: Add ½ cup marshmallow fluff.
Cream cheese: Replace half the butter with cream cheese for tang.
Boozy version: Add 1 tablespoon bourbon or rum.
Maple peanut butter: Add 1 teaspoon maple extract.
Honey sweetened: Replace ¼ cup powdered sugar with honey.
Salted caramel: Add a pinch of flaky sea salt on top.

Expert Tips

Use creamy peanut butter.Natural or old-fashioned peanut butter can cause the frosting to separate.
Sift the powdered sugar. This removes lumps for a silky texture.
Room temperature ingredients.Cold butter won’t cream properly.
Adjust consistency. Add more cream for spreading, less for piping.
Don’t overbeat. Overbeating can make the frosting grainy.

Storage and Reheating

Storage: Store in an airtight container in the refrigerator for up to 1 week.

Freezing: Freeze for up to 3 months. Thaw overnight in the refrigerator and re-whip before using.

Using chilled frosting: Let it sit at room temperature for 15-20 minutes and re-whip before spreading.

Frequently Asked Questions

Can I use natural peanut butter? It’s not recommended—the oils can cause separation.

What if I don’t have heavy cream?Use whole milk or half-and-half.

Can I make this dairy-free? Use vegan butter and plant-based milk.

Can I pipe this frosting? Yes, it pipes beautifully for cupcakes.

How much frosting does this make?About 2½ cups.

What to Use This Frosting On

Chocolate cake
Banana cake
Vanilla cake
Chocolate cupcakes
Brownies
Cookies
Fresh fruit (as a dip)
Cinnamon rolls
Toast or bagels

Final Thoughts

This Peanut Butter Frosting is pure perfection—creamy, rich, and absolutely irresistible. It’s the frosting that takes every dessert to the next level!