Gluten-Free Funfetti Birthday Cake (Printable)

Festive vanilla cake with rainbow sprinkles, naturally gluten-free and perfect for celebrations.

# What You Need:

→ Dry Ingredients

01 - 2 ½ cups gluten-free all-purpose flour blend with xanthan gum
02 - 2 teaspoons baking powder
03 - ½ teaspoon baking soda
04 - ½ teaspoon fine salt

→ Wet Ingredients

05 - 1 cup granulated sugar
06 - ½ cup unsalted butter, softened
07 - ½ cup vegetable oil
08 - 4 large eggs, room temperature
09 - 1 tablespoon pure vanilla extract
10 - 1 cup whole milk, room temperature

→ Add-ins

11 - ½ cup gluten-free rainbow sprinkles

→ Frosting

12 - 1 cup unsalted butter, softened
13 - 4 cups powdered sugar, sifted
14 - 2-3 tablespoons whole milk or dairy-free milk
15 - 2 teaspoons pure vanilla extract
16 - Pinch of salt
17 - Extra gluten-free sprinkles for decorating

# How To Make:

01 - Preheat the oven to 350°F. Grease and line two 8-inch round cake pans with parchment paper.
02 - In a medium bowl, whisk together the gluten-free flour blend, baking powder, baking soda, and salt. Set aside.
03 - In a large bowl, beat the sugar, butter, and oil together until light and fluffy, about 2-3 minutes.
04 - Add eggs, one at a time, beating well after each addition. Mix in the vanilla extract.
05 - Alternately add the flour mixture and milk to the wet ingredients, beginning and ending with flour. Mix until just combined—do not overmix.
06 - Gently fold in ½ cup rainbow sprinkles with a spatula.
07 - Divide the batter evenly between the prepared pans. Smooth the tops.
08 - Bake for 28-32 minutes, or until a toothpick inserted in the center comes out clean.
09 - Let cakes cool in pans for 10 minutes, then turn out onto a wire rack to cool completely.
10 - Beat the softened butter until creamy. Gradually add powdered sugar, beating until smooth. Mix in vanilla, salt, and 2 tablespoons milk. Add more milk if needed for spreading consistency.
11 - Place one cake layer on a serving plate. Spread a generous layer of frosting on top. Place the second layer on top and frost the top and sides of the cake.
12 - Decorate with extra sprinkles as desired. Slice and serve.

# Expert Tips:

01 -
  • This cake proves that gluten-free baking can still deliver the tender, moist crumb everyone expects from a celebration dessert
  • The rainbow sprinkles folded into the batter create those delightful confetti specks that make every slice feel like a party
  • Its sturdy enough to stack and frost beautifully but still melts in your mouth with that classic vanilla birthday cake flavor
02 -
  • Letting all refrigerated ingredients come to room temperature before starting is non-negotiable for this recipe to work properly
  • Every oven is different, so start checking your cake at 28 minutes rather than waiting until 32
  • Gluten-free cakes need to cool completely before frosting or your layers will slide and your frosting will weep
03 -
  • Weighing your gluten-free flour with a kitchen scale gives more consistent results than cup measurements
  • If you can't find gluten-free sprinkles, white chocolate chips make an equally delicious and festive alternative