I am sharing this Snickerdoodle peanut butter cookie cake recipe in partnership with Krusteaz, for whom I am proud to be a brand ambassador. As always, all opinions are mine, and THANK YOU for supporting the brands that make it possible for me to continue creating great recipes for you.

Snickerdoodle Peanut Butter Cookie Cake

I am still on the Halloween candy trail here, folks! These Kit Kat cupcakes from earlier in the week were for me because I love Kit Kats. On the other hand, the hubs would care less about Kit Kats, Snickers, Twix, or any other candy bar. As long as it is not peanut butter cups, it’s not for him, so I had to make his own Halloween candy treat. But why make something just for him?? Selfish, I know! I love a perfectly spiced snickerdoodle cookie…a warm, soft buttery cinnamon cookie is always a great fall treat. I made this snickerdoodle peanut butter cookie cake to have the best of both worlds! I get my snickerdoodle cookie, and he gets a cookie loaded with peanut butter pieces. Win Win if you ask me!!

Snickerdoodle Peanut Butter Cookie Cake

Have you ever made a cookie cake?? It’s so easy and pretty fancy!! You just dump your entire cookie dough in a round pan and bake. Less work (instead of scooping dough), less time (no need to chill anything), and more cookies per surface area (ok, maybe I made that up!). But you get the gist.

I used one of my favorite Krusteaz cookie mixes, the Snickerdoodle Cookie Mix, for this recipe. I always love tinkering with a box mix to fit our tastes, and it is exciting to take something simple to a whole different level (and probably why I love working with Krusteaz as part of their Baker’s Dozen). For example, I incorporated the cinnamon sugar in the mix into the dough instead of as a coating in the traditional snickerdoodle. This amped the cinnamon in the cookie cake and aerated the butter for a soft and chewy cookie.

Snickerdoodle Peanut Butter Cookie Cake

Each cookie cake slice is loaded (I mean, look at that!!) with peanut butter pieces making the peanut butter flavor key in this cake!! Peanut butter lovers will love it, and cinnamon lovers will love the chewy cinnamon cookie. Make sure you save some peanut butter pieces after Halloween to make this cookie cake!!

Snickerdoodle Peanut Butter Cookie Cake

Snickerdoodle Peanut Butter Chocolate Cookie Cake
Yield: 1 9-inch cookie cake

Snickerdoodle Peanut Butter Cookie Cake

A combination of everyone's favorite flavors in this snickerdoodle peanut butter cookie cake!!

Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes


Cookie Cake:

  • 1 package Krusteaz Snickerdoodle Cookie Mix
  • ½ cup unsalted butter, softened to room temperature
  • 1 large egg, room temperature
  • 1/3 cup peanut butter pieces
  • ¼ cup cinnamon baking chips


  • ½ cup unsalted butter
  • 2 cups powdered sugar
  • Pinch ground cinnamon
  • 2-3 tablespoons milk


  1. Preheat the oven to 350°F. Grease a 9-inch round cake pan with baking spray. Line pan with parchment and grease parchment.
  2. In a large bowl, using an electric mixer, beat the butter and cinnamon sugar topping (in the Krusteaz Snickerdoodle Cookie Mix box) together until butter is light, about 2-3 minutes on medium speed. Add the egg and beat until just combined. Reduce speed to low, add the Krusteaz Snickerdoodle Cookie Mix,Krusteaz Snickerdoodle Cookie Mix and mix until the cookie dough comes together.
  3. Fold in the peanut butter pieces and cinnamon baking chips using a spatula. Spoon the cookie dough into the prepared pan. Spread evenly.
  4. Bake cookie cake for 18-20 minutes, until edges are golden brown. Cool completely in the pan. The center will still look undone.
  5. Meanwhile, make the frosting by mixing all ingredients in a medium bowl. Beat until light and fluffy.
  6. Turn cookie cake out onto a plate. Pipe the frosting around the edges of the cake and decorate it with leftover peanut butter chocolate pieces.

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