Introduction
These Butterscotch Cupcakes deliver deep, rich flavor in every bite. The moist, tender crumb from cake flour and sour cream provides the perfect base for a decadent, silky butterscotch frosting. You’ll love the balance of sweet and salty that defines this classic dessert.
Prep & Cook Time
Prep Time: 20 minutes
Cook Time: 14 minutes
Total Time: 34 minutes
Servings: 16 cupcakes
Ingredients
- 1 1/2 cups dark brown sugar
- 1 3/4 cups cake flour (not self-rising)
- 1 1/2 teaspoons baking powder
- 1/2 teaspoon baking soda
- 3/4 teaspoon salt
- 1/2 cup unsalted butter ( room temperature)
- 2 large eggs (room temperature)
- 1/3 cup full-fat sour cream
- 1/2 teaspoon vanilla powder (use half this amount if you prefer less rich vanilla flavor) (use pure, not imitation )
- 2/3 cup whole milk (room temperature)
- 1 cup unsalted butter (room temperature)
- 4 cups powdered sugar (add more until it reaches your preferred consistency)
- 1/2 teaspoon salt
- 3 tablespoons butterscotch sauce (plan on a little extra sauce to drizzle over the cupcakes)
Instructions
- Preheat your oven to 350°F (175°C). Line two standard 12-cup muffin tins with 16 cupcake liners.
- In a medium bowl, whisk together the cake flour, baking powder, baking soda, and 3/4 teaspoon salt. Set aside.
- In a large bowl using a hand mixer or stand mixer, beat the 1/2 cup of room temperature butter and the dark brown sugar together on medium-high speed until light and fluffy, about 3 minutes.
- Add the eggs one at a time, beating well after each addition. Beat in the sour cream and vanilla powder (use half this amount if you prefer less rich vanilla flavor).
- Divide the batter evenly among the 16 cupcake liners, filling each about 2/3 full. Bake for 13-15 minutes, or until a toothpick inserted into the center comes out clean. Cool in the pans for 5 minutes, then transfer to a wire rack to cool completely.
- For the Frosting: In a large bowl, beat the 1 cup of room temperature butter on medium-high speed until very creamy and pale, about 5 minutes. Gradually add the powdered sugar with the mixer on low, then increase speed to combine. Beat for 2-3 minutes until fluffy.
- Add the 1/2 teaspoon salt and the 3 tablespoons of butterscotch sauce to the frosting. Beat on high for another minute until fully incorporated and smooth. If a stiffer consistency is desired, beat in additional powdered sugar 1/4 cup at a time.
- Frost the completely cooled cupcakes using a piping bag or an offset spatula. Drizzle the tops with the reserved extra butterscotch sauce just before serving.
Variations
- Salted Caramel Twist: Lightly sprinkle a few flakes of flaky sea salt over the frosted and drizzled cupcakes for an extra flavor pop.
- Butterscotch Filled: Use a cupcake corer or small spoon to remove the center of each cooled cupcake. Fill the cavity with butterscotch sauce before frosting.
- Mini Dessert Tower: Bake the batter in mini muffin tins for bite-sized treats perfect for parties. Reduce baking time to 9-11 minutes.
- Dulce de Leche Swap: Substitute the butterscotch sauce in the frosting and drizzle with store-bought or homemade dulce de leche for a slightly different caramelized flavor.
Tips for Success
- Room Temperature is Key: Having your butter, eggs, sour cream, and milk all at room temperature ensures your cupcake batter emulsifies properly, resulting in an even, tender texture.
- Don’t Overmix: Once you add the flour, mix only until the last streaks disappear. Overmixing develops gluten, which can make cupcakes tough.
- Measure Flour Correctly: For cake flour, spoon it into your measuring cup and level it off with a knife. Scooping directly packs the flour, leading to dry cupcakes.
- Cool Completely: Frosting a warm cupcake will cause the buttercream to melt and slide off. Let them cool for at least an hour on a wire rack.
Storage & Reheating
FAQ
Can I use all-purpose flour instead of cake flour?
It’s not recommended for this recipe. Cake flour has a lower protein content, which is essential for the delicate, soft crumb these cupcakes are known for. A substitute would alter the texture.
My frosting is too thin/runny. What should I do?
The recipe accounts for this—simply beat in additional powdered sugar, 1/4 cup at a time, until the frosting reaches a stiff, pipeable consistency.
Can I make the cupcakes ahead of time?
Yes, you can bake the cupcakes 1 day ahead. Let them cool completely, then store unfrosted in an airtight container at room temperature. Frost them the day you plan to serve them.
What kind of butterscotch sauce should I use?
A high-quality, thick store-bought sauce works perfectly. You can also use a homemade version. Avoid thin, runny ice cream toppings if possible, as they can make the frosting too soft.
Why is there salt in both the cupcake batter and the frosting?
The salt enhances and balances the sweetness, making the butterscotch flavor more complex and pronounced. It prevents the dessert from tasting one-dimensionally sweet.
Can I freeze these cupcakes?
Yes, unfrosted cupcakes freeze well for up to 3 months. Wrap them individually in plastic wrap and place in a freezer bag. Thaw overnight at room temperature before frosting. It’s best not to freeze the frosted cupcakes.

