Mary Kate’s Easy Delicious Peanut Butter Cookie Recipe

Who is Mary Kate? Good question. Mary Kate is one of my best friends from college. We were put randomly as roommates together freshman year and since then, it’s history. Shout out to my baby girl. Anyways…we both share a passion for cooking and baking. Nearly every night, when we were both RAs and no longer living together, I would trek over to her apartment no matter the weather. She would always have something cooking or baking, or simply in the works so that we got the chance to cook/bake together, which we loved.

Mary Kate, Chris and I on MK's and my graduation

Mary Kate, Chris and I on MK’s and my graduation

Talking about it makes me miss it way too much so let’s get on to the food. Besides the many amazing things she’s created, one of my favorite and easiest recipes was her peanut butter cookie recipe. On any given night while watching X Factor or Family Guy, Katie and I (Katie was her roommate at the time) demanded peanut butter cookies and wouldn’t shut up until she made them for us. Luckily for her, it was quick and easy. So here it is, I take no credit for it, except maybe the chunky peanut butter because I’m pretty sure it was supposed to be creamy.

  • Prep Time: 5 minutes?
  • Bake Time: 9-12 minutes (took mine 11 minutes)
  • Set Oven to: 350 degrees


  • 1 egg
  • 1 cup peanut butter
  • 1 cup sugar
  • handful of chocolate chips (optional)

And that’s it…I kid you not. Just talking about them makes me want to run to my kitchen and eat more. SO SIMPLE YET SO GOOD.


  • Butter up or grease your baking sheet
  • Drop that egg in a mixing bowl and slowly whisk in the cup of sugar

egg + sugar

  • Using a wooden spoon (or whatever you’ve got), stir in the cup of peanut butter into the egg-sugar mixture
  • Now, you don’t have to use chocolate chips, but she suggested I did, so I went for it and it added an amazing counter-taste to the peanut butter. Classic combo, right? So I just grabbed a handful of the chocolate chips and folded them in the peanut buttery mixture.

choco choco chip

  • And that’s it! That’s all the prep time! Now use a spoon or your fingers to place them on the baking sheet, spaced apart enough.
Waiting to bake

Waiting to bake

  • Now pop em in the oven for 9-12 minutes. Mine took 11 minutes. Take out, leave them a bit to stiffen up…THEN EAT THEM!!

They turned out lovely, and it brought me back to baking with her which was probably the biggest plus of this recipe. I hope you enjoy how easy and delicious this recipe is. Give thanks to Mary Kate!

photo (48)

15 Responses to "Mary Kate’s Easy Delicious Peanut Butter Cookie Recipe"

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  1. easyweimaraner

    January 19, 2013 at 8:18 am

    Great recipe… I wil try it – THANKS!

  2. cfanningtx

    January 19, 2013 at 2:25 pm

    Peanut butter and chocolate…my favs. Gotta give these a try 🙂

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  4. Living Healthy

    January 24, 2013 at 8:20 am

    Yumm! 🙂

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    March 17, 2013 at 7:04 am

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