Quick and Easy Chocolate Chip Cookie Bars with Unicorn Frosting

chocolate chip cookie bars

I have always been a girl who loves cookies. They are one thing that always brings back memories of my childhood. I baked about a bazillion cookies with my grandma. Some were awesome. Others not so much. She still let me make them almost every day though no matter how they turned out the day before.

Today we are going past the traditional cookie recipe. We are going to make a super tasty chocolate chip cookie bar with fluffy buttercream frosting. But wait, there’s more! These cookie bars will be peanut butter AND chocolate chip.
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They are seriously thick and chewy. I suggest cutting them a little small because they can get rich. They are definitely a crowd-pleaser though for a bar cookie made from scratch.
chocolate chip cookie bars

Unicorn Themed Frosting

I wanted to do a unicorn themed cookie because I have been all about unicorns lately. I got a unicorn pendant necklace and have been obsessed ever since. Ok, honestly I have always been obsessed with unicorns. It didn’t take much for me to want to make a cookie homage to them lol. The necklace definitely sparked the inspiration though! What better way to do a fun unicorn inspired cookie than to have pastel pink and blue swirled frosting?
You can add some fun star or heart-shaped sprinkles if you like as well. Or, whatever other unicorn cooking swag you may have available to you. ( If you do though you have to share! I totally geek out over finding fun new sprinkles and toppings!) 
chocolate chip cookie bars

The Perfect Flavor Combination

I was going to make these simple chocolate chip cookie bars. I later realized that I’m much more extra than that so my cookie bar recipe had to be too. With that, I decided to add peanut butter to the recipe and I’m so glad I did. The peanut butter and chewy chocolate chips make these bars a flavor match made in sparkly unicorn heaven
They are topped off with just enough icing to add to the flavor without overpowering you with sugar. You can completely omit the icing if you prefer though. These cookie bars are good enough to stand on their own without it!
chocolate chip cookie bars

How to Make Peanut Butter Chocolate Chip Cookie Bars

You can use ingredients you already have on hand if you don’t have any of those listed below. However, with the high level of sugar in these, it is best to use natural if/when possible. I’m not even going to pretend that these are healthy, but with a few simple swaps, they won’t be horrible for you. 


3 C organic flour

1/4 tsp baking soda

1/2 tsp baking powder

1/2 tsp salt

1 C room temperature butter, unsalted

1 1/4 C date sugar, or brown sugar 

1/2 C pure cane sugar

2 eggs

1 tsp vanilla

1 C natural peanut butter 

2 C chocolate chips


Combine butter, sugars, egg, and vanilla in the bowl of a stand mixer. ( Or medium bowl)

Combine flour, baking soda, and baking powder in a separate bowl.

Add dry ingredients to sugar mixture and blend until just combined. Add peanut butter and blend again until combined.

Fold in chocolate chips.

Spoon cookie batter into a 9×13 pan. Use the back of the spoon to flatten bars down into a uniform shape.

Bake at 350 degrees F for 20-25 minutes.

Let cool 10-15 minutes before icing.

Related: Soft and Chewy Peanut Butter Cookies 

How to Make Fluffy Buttercream Icing

This is a basic American buttercream icing recipe. You want to be sure that your ingredients are well combined and smooth. Otherwise, your icing will end up gritty and nobody likes sandpaper icing. You can adjust the vanilla as you like. However, keep in mind that this is what is keeping your buttercream from tasting too buttery. Surprisingly, the sugar doesn’t mask the taste as much as you think it would. 


4 C powdered sugar, divided

1 C butter, divided

1 C shortening, divided

2 T vanilla, divided


Working in two separate batches combine ingredients in stand mixer.

Using Wilton Icing coloring gel turn one batch to desired shade of blue and the other to desired shade of pink.

Spoon both batches on top of cookies. Use a butter knife to combine icing into a swirling marbled pattern.

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These quick and easy chocolate chip cookie bars are the ultimate indulgence for unicorn lovers! #chocolatechipcookiebar #easycookiebar #unicornlover #unicornparty

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