Peanut Butter Oatmeal Bars

I hope that everyone is excited for Labor Day weekend! I have to work on both Saturday and Sunday, but I don’t have work or school on Monday, and that’s enough for me to be excited about. Mondays I have a really boring, introductory science class that I have to take as a requirement to graduate and I’ve been putting it off since my freshman year, so I am overjoyed at not having to go to that class this upcoming week.

These bars were just something I happened to have all of the ingredients for and so I whipped them together quickly before going over to a friend’s house that night. I think that they were great, although I think I would add a bit less oats (I’ve made this change in the recipe). They were both sweet and salty and had a bit of a crunch to them because I used chunky peanut butter (as always). There’s also a creamier texture to them because of the peanut butter chips I added in and the oats add a perfect chewiness to the whole thing. If you’re a big peanut butter fan, then these are definitely for you!

Peanut Butter Oatmeal Bars
Your ingredients.

Peanut Butter Oatmeal Bars
Combine the flour, oats, baking soda, and salt in a medium bowl and set aside.

Peanut Butter Oatmeal Bars
Beat together the butter, brown sugar, and peanut butter until well combined and creamy, about 3-5 minutes (no less than 3 minutes).

Peanut Butter Oatmeal Bars
Add in the egg and vanilla and beat well.

Peanut Butter Oatmeal Bars
Gradually beat in the flour mixture until just moistened. You can always finish mixing by hand, but you never want to over-mix with an electric mixer because it make the bars/cookies/whatever dry and crumbly.

Peanut Butter Oatmeal Bars
I used peanut butter chips, but you can use chocolate chips or nuts or whatever you like! Fold these in by hand.

Peanut Butter Oatmeal Bars
I highly recommend that you line and grease your baking pan so the bars can be easily lifted out later. Then, using your hands because the dough is so thick, press the dough down into the pan. Bake at 350 degrees F for 25-30 minutes if you’re using an 8×8 pan, or 40-50 minutes if you’re using a 9×13 pan. About three quarters of the way through baking time, my bars started to get a little too brown, so I covered them with tinfoil for the remainder of the baking time.

Peanut Butter Oatmeal Bars
Let cool completely after being removed from the oven. When ready, lift the bars out of the pan by the edges of the tin foil (be careful!) and slice into squares.

Peanut Butter Oatmeal Bars
I just loved these bars and they would even be good for breakfast!

Peanut Butter Oatmeal Bars
Cook time: 
Total time: 
Serves: 8x8 pan
  • 1 cup all-purpose flour
  • ¾ cup rolled oats
  • ½ teaspoon baking soda
  • ¼ teaspoon salt
  • ½ cup (1 stick/4 oz./113g) unsalted butter, room temperature
  • 1 cup firmly packed brown sugar (I used light brown sugar)
  • ½ cup creamy or chunky peanut butter (I used chunky)
  • 1 egg, room temperature
  • 1 teaspoon vanilla extract
  • ½ cup peanut butter or chocolate chips
  • powdered sugar for dusting
  1. Position oven rack in the center of the oven. Preheat oven to 350°F/180°C. Line and grease an 8-inch square baking pan with cooking spray. In a bowl, combine the flour, oats, baking soda and salt and stir with a whisk until well blended. Set aside.
  2. In a large bowl, using an electric mixer, beat together the butter, brown sugar and peanut butter on medium speed until creamy, about 3 minutes. Turn off the mixer and scrape down the sides of the bowl with a rubber spatula. Add the egg and vanilla and beat well. Turn off the mixer and add the flour-oat mixture. Beat on low speed just until blended. Using the rubber spatula, scrape the batter into the pan and spread it evenly (I used my hands to press the dough into the pan because the batter was so thick).
  3. Place the baking pan in the oven and bake until the top of the cookie is golden and looks firm, 25 to 30 minutes (40-50 minutes if using a 9x13 pan. Also, if your bars start to get too brown on top, cover the pan with some tin foil). Remove the baking pan from the oven and set it on a wire cooling rack. Let cool completely. Lift the cookie from the pan, dust it with confectioners’ sugar and cut it into 1x4-inch bars.
Adapted From


11 Responses

  1. Mom says:

    that shot is very pretty, love the little paper idea!

  2. ingrid says:

    I agree with Moms that first photo is a good one! These sound and look really good. Thanks for sharing. I’m hoping to do lots baking this weekend!

  3. Krystle says:

    my boyfriend would love these! I might have to make them for breakfast for him. Thanks for the recipe

  4. theyoman says:

    Can you use instant oats for these?

  5. Val says:

    I hope your professor doesn’t read this blog! Otherwise you might be forced to bring your baking to class. :)

    Good luck with the fall semester and I mihgt have to make these this weekend!

  6. These look fantastic. My favorite so far were the S’mores brownies. YUM! Thanks for all of the fantastic recipes.

  7. […] November 9, 2009 Oh boy, I’m so excited, I’ve never been comfortable with seeing myself on camera but this was so fun. Plus I’ve discovered the wonders of video editing, twas fun. I don’t think I’ve ever been glued to the computer for more than 24 hours but for this video, I’ve discovered an alternate universe, of late nights and imagination.  I hope you guys enjoy this video! I baked some peanut butter – oatmeal- chocolate chip squares that were yummy, and soul-satisfying. Plus it was too easy to make. Follow the video and viola! I adapted the recipe from crepes of wrath […]

  8. Mane says:

    Hi! Great Blog! I’m just an iniciated in cooking.. as it’s summer and i’m bored at home, i’m having a lot of fun learning for myself. A blog like this one is a great way of having some kind of record of your progress… you inspired me to make one of my own, and i hope you don’t mind i took some of your recipes, like this one. Just letting you know. Bye!

  9. Whitney says:

    This is the third recipe my boyfriend and I have made from your site, and they are fantastic! We have loved all three. Good work!

  10. admin says:

    Theyoman: Nope, you can’t use instant oats in most recipes like this. They just turn to mush.

Leave a Reply

©2022 The Crepes of Wrath