Save on Pinterest

Easy Peanut Butter Oatmeal Cookies

This easy oatmeal cookie recipe is great with a glass of cold milk! With their peanutty flavor, these scrumptious cookies hit the spot. Plus, they couldn't be easier to make! —Marilyn Blankschien, Clintonville, Wisconsin
  • Total Time
    Prep/Total Time: 20 min.
  • Makes
    2 dozen


  • 1/2 cup chunky peanut butter
  • 1/2 cup packed brown sugar
  • 1 large egg
  • 1-1/4 cups quick-cooking oats
  • 1/2 teaspoon baking soda


  • In a small bowl, cream peanut butter and brown sugar until fluffy. Beat in egg. Add oats and baking soda to creamed mixture; mix well.
  • Drop by tablespoonfuls 2 in. apart onto greased baking sheets; flatten slightly. Bake at 350° for 6-8 minutes. Remove to wire racks to cool. Store in an airtight container.

Peanut Butter Oatmeal Cookie Tips

Can you use old-fashioned oats in cookies?

Yes, you can use old-fashioned oats! Because old-fashioned oats are whole-rolled oats, they may give you a chewier texture in the cookie. If you want a texture more like quick oats, pulse the old-fashioned oats in a food processor a few times to break them down into smaller pieces. Learn more about the different types of oats.

Why do my oatmeal cookies go flat?

There are a few reasons why your cookies may go flat. To avoid flat cookies, make sure to properly cream the butter and sugar until light and fluffy. This creates air pockets that allow cookies to puff up during the baking process. If your dough is getting too warm to work with, pop it into the fridge for 30 minutes so the fat can solidify. That way, the cold fat will melt slowly in the hot oven and the cookies won’t come out flat.

What else can I add to easy oatmeal cookies?

If you’re having a chocolate craving, feel free to add some M&M’s (even peanut M&M’s!) or chocolate chips. A dash of cinnamon and some chopped pecans taste amazing in oatmeal cookies, too!
Nutrition Facts
1 cookie: 67 calories, 3g fat (1g saturated fat), 9mg cholesterol, 57mg sodium, 8g carbohydrate (5g sugars, 1g fiber), 2g protein. Diabetic Exchanges: 1/2 starch, 1/2 fat.
Every editorial product is independently selected, though we may be compensated or receive an affiliate commission if you buy something through our links.


Click stars to rate
Average Rating:
  • knollbrookcook
    Nov 26, 2020

    These cookies taste good …nice and peanut buttery and oatmealy!!! They are a soft cookie and I found the dough to be sticky and a bit hard to work with. Perhaps I should have floured my hands but I washed them a lot and got along ok. I used a teaspoon, not a tablespoon, to drop them on the pan and I only got 18 cookies.

  • Ollie
    May 18, 2020

    Yikes! Forgot to say in my review that I doubled the recipe and THEN added 1/2 tsp salt and 1 tsp vanilla.

  • Hazel
    May 6, 2020

    Followed it as written first time but it was a little crumbly so this time I doubled it,

  • Anita
    Mar 22, 2020

    I just made these. I love the flavor - just enough peanut butter and sweetness to satisfy me. My pb is all natural (only contains peanuts, nothing else) and as I was at the end of the jar was a bit scant on peanut butter. I think that’s why mine ended up a bit crumbly. I like that these have only a few ingredients and that the batch is small. I followed the recipe as is, except I simply mixed with a fork, and all I have on hand are old fashioned oats, which may also be why they are crumbly. I will make these again as they are easy and nutritious.

  • Loretta
    Dec 26, 2019

    I used rolled oats. Not instant and they turned out great. This recipe is simple,quick and delicious. It will be my go-to recipe for a healthy cookie choice.

  • Becca
    Nov 2, 2019

    This is delicious! I have a lot of those instant oatmeal flavored packets and used the maple to make these. Also used creamy peanut butter as my husband accidentally bought a 4lb container. ?? They are super soft and taste so perfect!

  • momzilla24
    Sep 14, 2019

    Made recipe as written. . they are easy to make and the cookies have a nice texture but they were Just okay, not much peanut butter flavor and I like my cookies sweeter than these. Won't make again.

  • Lori
    Aug 28, 2019

    Great fast recipe. Whips up in just a couple of minutes and finished baking in a few more. Not too sweet but satisfies that cook craving. Didn't have quick cooking oats on hand and used old fashioned. Great consistancy. Will definitely make them again. Hmmm, think a little marshmallow creme would make a yummy sandwich. Look out Lil Debbie!

  • julia
    Jun 17, 2019

    These were the best cookies ive ever had. I added a little vanilla and some chocolate chips in the cookies while they were on the cookie sheet. Sooooo yummy. And they arent that bad for you either!

  • Fran
    May 4, 2019

    So, i changed the sugar for honey... and nope. Honey just takes over all the other flavours. I also added powdered cinnamon and peanut Butter ofc! They were tasty, good texture (very fluffy) and really quick to make!