Pumpkin Spice Buttercream Frosting

Published: Aug 28, 2026

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This easy Pumpkin Spice Buttercream Frosting is creamy, fluffy, and filled with warm fall flavor. Made with only four simple ingredients, it is the perfect finishing touch for pumpkin brownies, cupcakes, cakes, cookies, and other autumn desserts.

Pumpkin Spice Buttercream Frosting

Unlike pumpkin frosting made with canned pumpkin, this recipe uses pumpkin pie spice to create that cozy seasonal flavor. That means the frosting stays thick, smooth, and easy to spread or pipe.

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Why You’ll Love This Pumpkin Spice Frosting

Made with only four ingredients
Ready in about five minutes
Thick, creamy, and easy to spread
No canned pumpkin needed
Easy to adjust for spreading or piping
Perfect for fall baking and Thanksgiving desserts

Ingredients:

Salted Butter: Use softened butter so the frosting becomes smooth and creamy.
Powdered Sugar: Sweetens and thickens the buttercream.
Pumpkin Pie Spice: Adds warm cinnamon, nutmeg, ginger, and clove flavors.
Cream or Milk: Helps create a smooth, spreadable consistency.

Tips for the Best Pumpkin Spice Buttercream

Soften the butter first: Room-temperature butter blends more smoothly and prevents lumps.
Add the sugar gradually: Mix in small amounts at a time for a lighter, smoother consistency.
Sift lumpy powdered sugar: This is especially helpful if you plan to pipe the frosting.
Adjust the consistency: Add a little more milk for thinner frosting or additional powdered sugar to make it thicker.
Beat until fluffy: After all the ingredients are combined, beat the frosting for another one to two minutes.
Start with cooled desserts: Never spread buttercream on warm brownies, cupcakes, or cakes.
Taste before using: Add a small pinch of pumpkin pie spice if you prefer a stronger fall flavor.

How to Make Pumpkin Spice Buttercream Frosting

Place the softened butter in a large mixing bowl. Beat it with an electric mixer until smooth and creamy.
Add the cream or milk and pumpkin pie spice. Mix until completely combined.
Gradually add the powdered sugar, mixing on low speed to prevent it from flying out of the bowl.
Increase the mixer to medium speed and beat until the frosting is light, creamy, and fluffy.
Spread or pipe the frosting onto your favorite cooled dessert.

Store the frosting in an airtight container in the refrigerator for up to five days. Before using it, allow it to soften at room temperature and beat it again until creamy.

You can also freeze buttercream frosting for up to three months. Thaw it overnight in the refrigerator, bring it to room temperature, and whip it with an electric mixer before spreading or piping.

How Much Frosting Does This Recipe Make?

This recipe makes approximately 1½ cups of frosting. It should provide enough buttercream to:

Frost one 8-inch square pan of brownies
Frost about 12 cupcakes
Lightly frost one 8-inch or 9-inch cake
Fill and decorate approximately 12 sandwich cookies

For a layer cake or a larger batch of cupcakes, double the recipe.

Pumpkin Spice Buttercream Frosting on pumpkin brownies

Spread the frosting over a cooled batch of 2-ingredient pumpkin brownies for an easy fall dessert that is thick, fudgy, creamy, and filled with pumpkin spice flavor.