Whip up creamy, delicious Peanut Butter Frosting using just four simple ingredients. This rich, smooth frosting is perfect for cakes, cupcakes, cookies, and any quick sweet treat.
This peanut butter frosting is rich, fluffy, and incredibly easy to make. With a classic peanut butter flavor and a spreadable, airy texture, it elevates simple baked goods into something special. It’s quicker and more flavorful than store-bought alternatives and ideal when you want a fuss-free homemade frosting.
Why We Love This
- Easy & Quick: Made with only four ingredients in minutes.
- Rich & Creamy: Smooth texture with true peanut butter flavor.
- Versatile: Great on cakes, cupcakes, cookies, brownies, and more.
- No-Fuss: Minimal steps and ingredients for reliable results.
- Crowd-Pleaser: Sweet, fluffy, and indulgent—popular with all ages.
Ingredients
- Unsalted butter, softened – adds richness and creates a smooth, creamy base.
- Peanut butter – use creamy for the best texture and classic flavor.
- Milk – adjusts the frosting to a perfect spreadable consistency.
- Confectioners’ (powdered) sugar – sweetens and thickens the frosting to a fluffy texture.
The full ingredient amounts are listed in the recipe card below.
How To Make Peanut Butter Frosting
Step 1: In a medium bowl, cream together the softened butter and peanut butter until smooth and fluffy. A hand mixer or stand mixer works well. Optionally add a splash of vanilla for added depth.
Step 2: Gradually add the confectioners’ sugar, alternating with the milk. Beat after each addition until you reach your desired consistency.
Step 3: Continue mixing until fully combined and the frosting is light and fluffy.
Step 4: Frost cupcakes, cakes, or cookies. For neat decoration, transfer the frosting to a piping bag and pipe swirls. Garnish with sprinkles or candy if desired.
How to Use Peanut Butter Frosting
This easy peanut butter frosting pairs beautifully with a wide range of baked goods. It’s one of our favorite finishes for:
- Vanilla or chocolate cupcakes — pipe swirls or spread for a classic combination.
- Bundt cakes or sheet cakes — spread or pipe for an extra-rich topping.
- Mini brownies or cookie sandwiches — use as a filling for decadent bites.
Pro Tips
- Peanut butter choice: Use regular creamy peanut butter for the best texture. Natural or crunchy varieties may change consistency.
- Piping: Use a piping bag for consistent, decorative frosting on cupcakes or cakes.
- Cool cakes first: Always let cakes cool completely before frosting to prevent melting or sliding.
- Adjust consistency: Add a little milk if too thick, or more confectioners’ sugar if too thin.
- Flavor boost: A pinch of salt or a splash of vanilla extract enhances the peanut butter flavor.
FAQs
This frosting can be stored at room temperature in an airtight jar for 2–3 days. For longer storage, refrigerate up to one week. Bring to room temperature and stir before using to restore fluffiness.
How many cupcakes or cake will this recipe cover?
The recipe yields enough frosting for about 20–24 cupcakes, depending on how generously you frost. It will also cover a 9×13 cake or work as filling for two 9-inch layer cakes.
Why did my frosting separate?
Separation usually happens when ingredients are too cold or too warm. Start with room-temperature butter and peanut butter (soft but not melted) to ensure a stable, creamy frosting.
Can I freeze this frosting?
Yes. Store the frosting in an airtight freezer-safe container for up to two months. Thaw at room temperature and stir well before using.
Try More Frosting Recipes
- Vanilla Buttercream Frosting Recipe
- Cool Whip Frosting
- Cool Whip Cream Cheese Frosting
- Nutella Frosting
- Cream Cheese Frosting
- Cookie Dough Frosting
Whip up this easy four-ingredient Peanut Butter Frosting today to elevate your cakes, cupcakes, or cookies. Bake, frost, and enjoy!
Peanut Butter Frosting
Ingredients
- ½ cup (1 stick) unsalted butter, softened
- 1 cup peanut butter (creamy)
- 2–3 tablespoons milk
- 3 cups powdered (confectioners’) sugar
Instructions
- In a medium bowl, cream together the softened butter and peanut butter until smooth and fluffy.
- Gradually add the powdered sugar, alternating with milk, beating after each addition until you reach the desired consistency.
- Frost cupcakes, cakes, or cookies. Garnish with candy or sprinkles if desired.
- Store leftovers in an airtight container.
Nutrition Facts
Calories: 156 kcal; Carbohydrates: 17 g; Protein: 3 g; Fat: 9 g; Saturated Fat: 4 g; Cholesterol: 10 mg; Sodium: 84 mg; Potassium: 71 mg; Fiber: 1 g; Sugar: 16 g; Vitamin A: 118 IU; Calcium: 7 mg; Iron: 1 mg.