Method
Step 1: Prep & Preheat
- Preheat oven to 350°F (175°C).
- Grease cake pans, line bottoms with parchment, and grease again.
Step 2: Mix Dry Ingredients
- In a medium bowl, whisk together flour, baking powder, baking soda, and salt.
Step 3: Cream Wet Ingredients
- In a large bowl with an electric mixer, beat butter and sugar until light and fluffy (~3 minutes).
- Add eggs one at a time, mixing well after each.
- Mix in vegetable oil, vanilla, buttermilk, and sour cream until smooth.
Step 4: Combine & Add Sprinkles
- Gradually add dry ingredients to wet, mixing on low until just combined.
- Gently fold in rainbow sprinkles with a spatula.
Step 5: Bake
- Divide batter evenly among pans.
- Bake 25–30 minutes, or until a toothpick inserted in the center comes out clean.
- Cool in pans 10 minutes, then turn out onto wire racks to cool completely.
Step 6: Make the Frosting
- In a large bowl, beat softened butter on medium speed until creamy (~2 minutes).
- Gradually add powdered sugar, 1 cup at a time, mixing on low.
- Add vanilla and milk; beat on high for 3 minutes until fluffy, adding more milk if needed.
Step 7: Assemble the Cake
- Place one cake layer on a serving plate; spread frosting evenly over the top.
- Repeat with remaining layers.
- Frost the sides and top with remaining frosting.
- Decorate with extra rainbow sprinkles.
Notes
🥄 Variations
Chocolate Funfetti: Add ¼ cup cocoa powder to dry ingredients Lemon Twist: Add 1 tbsp lemon zest for citrus flavor Funfetti Cupcakes: Bake in cupcake liners for 18–22 minutes Gluten-Free: Use a 1:1 gluten-free flour blend 🧊 Storage & Reheating
Room Temp: Keep covered up to 2 days Refrigerator: Store covered up to 5 days; bring to room temp before serving Freezer: Freeze slices or whole cake (well-wrapped) for up to 2 months ❓ 10 FAQs
Can I use nonpareils instead of jimmies?
No—nonpareils bleed color. Jimmies are best! Why is my cake dense?
Overmixing can cause heaviness. Can I make ahead?
Yes—bake layers a day ahead; frost the next day. Can I use cake flour?
Yes—for a finer crumb, swap 3¼ cups all-purpose with 3½ cups cake flour. Can I use low-fat sour cream?
Full-fat gives the best texture, but low-fat works in a pinch. What if I don’t have buttermilk?
Make a substitute: 1 cup milk + 1 tbsp lemon juice or vinegar, let sit 5 min. How do I get flat cake layers?
Wrap pans with cake strips or trim tops after baking. Is this recipe good for layered birthday cakes?
Yes—holds shape beautifully for tiered cakes. What sprinkles work best?
Classic rainbow jimmies—avoid nonpareils or sanding sugar. Can I frost with cream cheese frosting?
Absolutely—delicious with funfetti! 🏁 Conclusion
This Funfetti Cake is moist, fluffy, and packed with colorful sprinkles—everything you want for the perfect celebration cake. From birthdays to any day that needs a little extra joy, this homemade version is way better than boxed mixes—and easy to make! 🎉🎂
Chocolate Funfetti: Add ¼ cup cocoa powder to dry ingredients Lemon Twist: Add 1 tbsp lemon zest for citrus flavor Funfetti Cupcakes: Bake in cupcake liners for 18–22 minutes Gluten-Free: Use a 1:1 gluten-free flour blend 🧊 Storage & Reheating
Room Temp: Keep covered up to 2 days Refrigerator: Store covered up to 5 days; bring to room temp before serving Freezer: Freeze slices or whole cake (well-wrapped) for up to 2 months ❓ 10 FAQs
Can I use nonpareils instead of jimmies?
No—nonpareils bleed color. Jimmies are best! Why is my cake dense?
Overmixing can cause heaviness. Can I make ahead?
Yes—bake layers a day ahead; frost the next day. Can I use cake flour?
Yes—for a finer crumb, swap 3¼ cups all-purpose with 3½ cups cake flour. Can I use low-fat sour cream?
Full-fat gives the best texture, but low-fat works in a pinch. What if I don’t have buttermilk?
Make a substitute: 1 cup milk + 1 tbsp lemon juice or vinegar, let sit 5 min. How do I get flat cake layers?
Wrap pans with cake strips or trim tops after baking. Is this recipe good for layered birthday cakes?
Yes—holds shape beautifully for tiered cakes. What sprinkles work best?
Classic rainbow jimmies—avoid nonpareils or sanding sugar. Can I frost with cream cheese frosting?
Absolutely—delicious with funfetti! 🏁 Conclusion
This Funfetti Cake is moist, fluffy, and packed with colorful sprinkles—everything you want for the perfect celebration cake. From birthdays to any day that needs a little extra joy, this homemade version is way better than boxed mixes—and easy to make! 🎉🎂
