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You are here: Home / Cakes and Cupcakes / Funfetti Peanut Butter Cookie Cake

Funfetti Peanut Butter Cookie Cake

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This funfetti peanut butter cookie cake (with plenty of chocolate) is a delicious and simple way to celebrate any occasion, or just a regular old Thursday.

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overhead shot of a slice of funfetti peanut butter cookie cake on a plate with the rest of the cookie cake in the background

With chocolate chips! And chocolate frosting! And extra sprinkles on top! Because we’re CELEBRATING today! April 1 is my little Cookie’s first birthday. (Technically she’s two-and-a-half-ish but we’re calling the day I signed her adoption papers her bday. So she’s one.)

She’s lasted one whole year as my fur baby without running away! Although she did attempt to make a break for it when I first met her at her adoption day. Her tiny 12-pound self jumped out of the shopping cart in the parking lot at Petco, right in front of all the volunteers from the shelter. I was terrified they’d think I was neglectful and not let me take her home but they were very nice and laughed it off. A year later I’m still watching her like a hawk every second and we’ve not had a similar experience.

Knock on wood.

She’s very wiggly so you never know.

overhead shot of the unbaked funfett peanut butter cookie cake

When I first brought her home, after the initial few days where she refused to eat anything, I started bribing her with all kinds of treats to get her to eat. Pumpkin was the first food she really liked. Much to my dismay, she had no interest in peanut butter. (I KNOW! WHAT?)

Then a few months ago I’d been eating peanut butter out of the jar (what else is new) and dripped some on my jeans. I didn’t even notice it until Cookie started licking my knee and wagging her tail. And ever since then she’s been a peanut butter fanatic.

So naturally her first birthday cake had to incorporate peanut butter. I settled on making a cookie cake with peanut butter and sprinkles. It’s basically my little Cookie but in cake form. She’s fun, she’s sweet, she’s completely adorable—just like this cookie cake.

overhead shot of the funfetti peanut butter cookie cake with piped chocolate frosting

And guys, nothing could be easier. It’s even easier than baking chocolate chip cookies because instead of all the dropping onto baking sheets/removing from baking sheets/repeating til you drop, you just bake the dough all at once. Top with a little chocolate frosting and you’ve got yourself a cookie cake worthy of a celebration.

Clearly, this is not a dog-friendly cake so don’t worry. I didn’t let the birthday girl have any. I’m working on a pupcake for her so she can get in on the celebration.

Yes, I feel a little guilty for celebrating without her. No, I don’t think she cares. I put a little PB in a kong for her while I ate my cookie cake. She wagged her tail so we’re good.

Dog birthdays are the best birthdays of all :).

slice of funfetti peanut butter cookie cake on a plate with the cake and some forks in the background

Print
Funfetti Peanut Butter Cookie Cake
Prep Time
20 mins
Cook Time
15 mins
Total Time
35 mins
 

This cookie cake is easier to make than a batch of drop cookies and it's such a fun treat for a party!

Course: Dessert
Cuisine: American
Servings: 8
Author: Kelsie
Ingredients
Cookie cake:
  • 4 tablespoons unsalted butter at room temperature
  • 1/4 cup granulated sugar
  • 1/4 cup packed light brown sugar
  • 1 egg
  • 1/4 cup + 2 tablespoons creamy peanut butter don’t use natural
  • 1/2 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 1 teaspoon cornstarch
  • 1/4 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1/2 cup mini chocolate chips
  • 2 tablespoons rainbow jimmies
Chocolate frosting:
  • Chocolate buttercream:
  • 1/2 cup unsalted butter at room temperature
  • 1/2 teaspoon vanilla extract
  • 1/4 teaspoon salt
  • 5 tablespoons cocoa powder
  • 1 1/2 cups powdered sugar
  • 1 to 2 tablespoons milk or heavy cream as needed
Instructions
Cookie cake:
  1. Preheat oven to 375 degrees. Spray a 9-inch tart pan with a removable bottom (or a 9-inch cake pan) with cooking spray. Set pan aside.
  2. In the bowl of a stand mixer fitted with the paddle attachment, cream the butter and sugars together until light and fluffy. Add the egg and beat to combine. Add peanut butter and vanilla, beating until fully incorporated.
  3. Combine the flour, cornstarch, baking soda, and salt in a small mixing bowl. With mixer on low, beat in to butter mixture until just combined. Fold in chocolate chips and jimmies until evenly distributed.
  4. Press dough into the prepared pan and bake for 12 to 15 minutes, until lightly golden. A toothpick inserted into the center of the cookie cake should come out clean. Cool completely in pan on a wire rack. Once completely cooled, carefully turn cookie cake out onto a serving plate.
Chocolate frosting:
  1. Beat butter on medium speed until light and fluffy, about 2 minutes. Add vanilla and salt and beat to combine. Beat in cocoa powder, then turn mixer to low and gradually add powdered sugar. Beat on high speed for 4 minutes. Add milk 1 teaspoon at a time to achieve a pipe-able consistency.
  2. Pipe frosting onto cooled cookie cake and decorated with sprinkles as desired. Serve and enjoy.

Cookie cake adapted from Allrecipes.

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Comments

  1. thebakingskillet says

    April 5, 2017 at 9:18 am

    Happy Birthday to your Cookie (belated) and yaayyyy that she likes Peanut Butter!! I have just the right occasion coming up to make this one .

    Reply
    • Kelsie says

      April 5, 2017 at 5:59 pm

      Thank you Jenny! Cookie says thank you, too :)!

      Reply
  2. Denise Browning says

    March 28, 2017 at 9:30 am

    Happy B-day to your sweet doggy! What a beautiful and fun cake…

    Reply
    • Kelsie says

      March 28, 2017 at 6:24 pm

      Thank you so much Denise! Cookie says thank you, too 🙂

      Reply
  3. Tandy | Lavender and Lime says

    March 26, 2017 at 11:48 pm

    What breed is Cookie? We have a rescue dog as well 🙂 Yummy cake! Did you know some dogs are allergic to peanut butter?

    Reply
    • Kelsie says

      March 27, 2017 at 12:54 pm

      Thank you, Tandy! Cookie is what I call “mystery terrier” :). I have absolutely no idea what else is mixed in there! Her vet thinks maybe some shih tau. . .but I don’t know. Aren’t rescue dogs the best? I had no idea dogs could be allergic to pb; I guess it makes sense since people can be!

      Reply
  4. blahnikbaker says

    March 26, 2017 at 7:23 pm

    Oh I can devour this in one seating!!!

    Reply
    • Kelsie says

      March 26, 2017 at 8:43 pm

      Haha! Me too :).

      Reply
  5. Julie is Hostess At Heart says

    March 26, 2017 at 10:38 am

    Cheers to little cookie! This cookie looks amazing. Your little piped drops are just perfect and I’d love a piece!

    Reply
    • Kelsie says

      March 26, 2017 at 5:34 pm

      Thank you so much Julie! I’ll gladly share any time 🙂

      Reply
  6. Allie R Taylor says

    March 25, 2017 at 7:32 pm

    Kelsie – you’re so funny. First I thought cookie was a child. Then no. Then I thought you GAVE her some cake. And then you didn’t. You sure are full of surprises. And I can see why you didn’t want to share. I wouldn’t either. Happy, happy birthday to your sweet fur baby. I love the cake, it’s awesome. Because peanut butter and chocolate. That’s why. XO

    Reply
    • Kelsie says

      March 26, 2017 at 8:30 am

      Haha! She kind of is my child–I definitely talk about her like she is :). Thank you so much for the birthday wishes and all of your kind words! PB and chocolate FOREVER! Thank you, Allie!

      Reply
  7. Carlee says

    March 25, 2017 at 8:41 am

    This definitely has my name written all over it. Peanut butter and sprinkles are two of my favorite food groups 😉

    Reply
    • Kelsie says

      March 25, 2017 at 10:04 am

      Haha! They’re two of mine, too. Thank you so much, Carlee!

      Reply
  8. Eva Taylor says

    March 25, 2017 at 8:31 am

    Thank you for leaving a comment on my blog. For some reason, your blog is not linked like everyone else’s, you must not have entered your url.
    Happy Birthday to your lovely puppy. The cake looks like a wonderful way to celebrate! You should check out the easiest gluten free peanut butter cookie recipe on my blog, it’s all about the peanut butter, I think you’ll like it.

    Reply
    • Kelsie says

      March 25, 2017 at 10:04 am

      Hmmm I must have forgotten. Thank you for the birthday wishes! I’ll definitely check out the cookie recipe. I love any peanut butter cookie!

      Reply
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  1. March 2017: A Review | Once In A Blue Spoon says:
    April 5, 2017 at 1:16 pm

    […] cute is this funfetti peanut butter cookie cake (from The Itsy Bitsy […]

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  2. funfetti peanut butter cookie cake - Yum Goggle says:
    April 1, 2017 at 5:45 pm

    […] GET THE RECIPE […]

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photo of Kelsie Roehl     Hey there! I’m Kelsie and this is where I share my buttery, sugary, and all-around delicious recipes. I LOVE to bake and I want you to love baking too, so all of my recipes are totally do-able for the home baker.  If you need a little dessert in your life, consider this your one-stop shop for anything sweet! Need a little more info? Here you go!

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