Ingredients
Method
Step 1: Prepare the Cake
- Preheat oven to 350°F (175°C).
- Grease and line a 9x13-inch baking pan with parchment paper.
- Whisk together cake flour, baking powder, and salt.
Step 2: Mix the Batter
- Beat butter and sugar until light and fluffy, about 3 to 5 minutes.
- Add eggs one at a time.
- Mix in vanilla bean paste.
- Alternate adding dry ingredients, milk, and sour cream until combined.
- Fold in rainbow jimmies if using.
Step 3: Bake
- Pour batter into the prepared pan.
- Bake for 28 to 32 minutes.
- Cool completely before assembling.
Step 4: Make the Frosting
- Beat butter until smooth.
- Gradually add powdered sugar.
- Mix in cream and vanilla extract.
- Continue beating until light and fluffy.
Step 5: Assemble the Dot Cake Cups
- Cut cake rounds using a biscuit cutter or the rim of your serving cup.
- Place one cake round into each cup.
- Add a layer of buttercream frosting.
- Add another cake layer if desired.
- Frost the top until level with the rim.
Step 6: Create the Sprinkle Coating
- Fill a shallow plate with rainbow nonpareils.
- Turn the cup upside down.
- Press the frosted surface into the sprinkles.
- Gently twist and lift.
Step 7: Chill and Serve
- Refrigerate for 30 minutes.
- Serve chilled or slightly softened at room temperature.
Notes
Nutrition Facts (Per Serving)
Recipe Notes
| Nutrient | Amount |
| Calories | 520 kcal |
| Total Fat | 24 g |
| Saturated Fat | 14 g |
| Cholesterol | 95 mg |
| Sodium | 290 mg |
| Total Carbohydrates | 71 g |
| Dietary Fiber | 1 g |
| Total Sugars | 52 g |
| Protein | 5 g |
| Calcium | 90 mg |
| Iron | 1.8 mg |
| Potassium | 120 mg |
- Use nonpareils only for the topping.
- Use rainbow jimmies inside the batter if making a funfetti version.
- Room temperature ingredients help create a softer cake texture.
- Chill the finished cups before serving for the best sprinkle crunch.
- Store covered in the refrigerator for up to 3 days.