Funfetti Sheet Cake

About a month ago I asked my brother what kind of cake he wanted me to make for his birthday dinner at my house and he said, Funfetti. While I love the good old boxed Funfetti cake as well, I thought a homemade one might be more fun.
Of course I not only had homemade Funfetti cake saved on Pinterest, but a Funfetti sheet cake. Booyah!
This cake was so fun, sweet and perfect for a birthday party. It can totally feed a crowd and you will have plenty of leftovers. ;)
And who doesn't love lots and lots of sprinkles??

Funfetti Sheet Cake
Slightly Adapted From: Sally’s Baking Addiction
1 cup unsalted butter, softened to room temperature
2 cups granulated sugar
2 large eggs, room temperature preferred
2 1/2 tsp. vanilla extract
1/2 cup plain or vanilla greek yogurt
2 1/4 cups all-purpose flour
1 tsp. baking soda
1/2 tsp. salt
1 cup whole milk
1/2 cup rainbow sprinkles, plus more for decor

Vanilla Frosting
3/4 cup unsalted butter, softened to room temperature
3 cups confectioners' sugar
2-3 Tbsp. whole milk
2 tsp. vanilla extract
1/8 tsp. salt

1. Preheat oven to 350F degrees. Generously grease (or spray with nonstick spray) a 12x17 inch half sheet/jelly roll pan. Set aside.
2. In a large bowl using a hand-held mixer or stand mixer fitted with a paddle attachment, cream the softened butter for about 1 minute on medium speed. Get it nice and smooth, then add the sugar on medium speed and beat until fluffy and light in color. 
3. Beat in eggs and vanilla until smooth. You'll need to stop the mixer and scrape down the sides and up the bottom of the bowl to get it all mixed a couple times. Beat in the yogurt on medium high speed until combined.
4. In a large bowl, whisk the flour, baking soda, and salt together until combined. Pour half of this flour mixture into the creamed butter mixture. Beat on low speed for 5 seconds. Pour in half of the milk. Beat on low speed for 5 seconds. Repeat with the rest of the flour and beat in the remainder of the milk until combined and smooth. Do not overmix. 
5. Using a large wooden spoon or rubber spatula, fold in the sprinkles.
6. Spread the cake batter into the prepared pan. Smooth it out into a thin, even layer with a rubber spatula. 
7. Bake for 20-30 minutes or until the top is lightly browned and a toothpick inserted in the center comes out clean. Remove from the oven and allow the cake to cool in the pan on a wire rack. As the cake is cooling, make the frosting.

For the frosting: 
1. In a large bowl using a hand-held mixer or stand mixer fitted with a paddle attachment, beat the butter on medium speed until creamy - about 2 minutes.
2. Add confectioners' sugar, milk, vanilla extract, and salt with the mixer running on low. Increase to high speed and beat for 3 full minutes. Add more confectioners' sugar if frosting is too thin, more milk if frosting is too thick, or a pinch more of salt if frosting is way too sweet.
3. Frost the completely cooled cake and decorate with more sprinkles. Serve immediately.


  1. I just made funfetti cakes recently as well AND used blue buttercream :) Great minds think alike! I haven't posted mine yet, but I have an extra surprise with them as well.. Yours look delicious!

    Chankanaab Cozumel


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