Sugar Cookie Cake is a soft, chewy giant sugar cookie baked in a 9‑inch pan, packed with colorful M&Ms and sprinkles, then finished with a creamy vanilla frosting border that makes it perfect for birthdays, holidays, and celebrations. It has all the buttery, tender texture of a classic sugar cookie plus the fun of a cookie cake you can slice into wedges and decorate like a party cake.
This version uses cream of tartar and baking soda for that classic sugar cookie tang and softness, plus a generous handful of M&Ms and sprinkles for color and crunch. The simple vanilla frosting is just enough to pipe a festive border without overwhelming the cake, echoing many funfetti and M&M cookie cake recipes.
Why you’ll love this sugar cookie cake
Sugar Cookie Cake comes together with basic pantry ingredients in one bowl and bakes in about 20 minutes, making it more convenient than scooping individual cookies. The cream of tartar helps keep the crumb soft and chewy and activates the baking soda, which is a classic trick in sugar cookie recipes to get a tender texture that holds its shape.
It is also incredibly customizable. You can swap the sprinkle and M&M colors for any holiday, change the piping style, or add a touch of almond extract for a more traditional sugar cookie flavor. A 9‑inch round cookie cake like this typically serves about 10–12 people when cut into wedges, which fits well for family parties and small gatherings.
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