A deliciously vintage recipe, Grandma’s Butterscotch Cake is a light and fluffy cake topped with a smooth and creamy butterscotch frosting. A cake that you won’t soon forget.
Ingredients
- 2 ¼ cup all-purpose flour
- ¾ teaspoon baking powder
- ½ teaspoon fine sea salt
- ⅓ teaspoon baking soda
- ¾ cup unsalted butter room temp
- 1 ¼ cup dark brown sugar packed
- 3 large eggs room temp
- ¾ cup whole milk room temp
- 1 tablespoon vanilla extract
- ½ cup sour cream room temp
For the frosting:
- ¾ cup butterscotch chips melted and cooled
- ¾ cup unsalted butter softened
- 2 cups powdered sugar
- 1 teaspoon vanilla extract
- 2 tablespoons whole milk
Instructions
- Preheat the oven to 350°F. Spray a 9×13 baking dish with baking spray, set aside.
- In a medium-sized bowl, stir together the flour, baking powder, salt, and baking soda, set aside.
- Cream together the butter and dark brown sugar in the body of a stand mixer with the paddle attachment until well incorporated and fluffy, scrape down the sides.
- Add the eggs one at a time, waiting until the first egg is fully combined until adding the next.
- Next add in the milk and vanilla, stir until combined. Scrape down the sides.
- Add half of the flour mixture, stir it in until combined.
- Add half of the sour cream, stir it in until combined. Repeat with the remaining flour mixture and sour cream. Scrape down the sides as needed.
- Spread the batter into the prepared baking dish and smooth out the top. Bake for 30-40 minutes until a toothpick inserted into the center comes out clean. Let it cool completely on a wire rack.
- While the cake cools, make the frosting. Melt the butterscotch chips per the directions on the bag in a small bowl, let it sit out on the counter for about 5 minutes before making the frosting so it isn’t super hot.
- Add the butter to a large bowl and whip until smooth with an electric hand mixer.
- Mix in the melted butterscotch chips. Add the powdered sugar a little at a time until fully mixed in, scrape down the sides.
- Add the vanilla and milk, stir it in. Turn the mixer on to medium-high and whip it for 3 minutes until light and fluffy.
- Once the cake is cooled all the way, top with the frosting and smooth it out. Cut and serve.

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