Peanut Butter and Oat Brownies Recipe -
Peanut Butter and Oat Brownies Recipe
  • READY IN 45 mins

Peanut Butter and Oat Brownies

Recipe by  

"This is a winner. If you love peanut butter and chocolate, you'll enjoy these. Spread chocolate frosting on top of peanut butter layer."

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Ingredients Edit and Save

Original recipe makes 16 servings Change Servings
  • PREP

    15 mins
  • COOK

    20 mins

    45 mins


  1. Preheat oven to 325 degrees F (165 degrees C). Grease a jelly-roll pan.
  2. Beat butter, 3/4 cup peanut butter, white sugar, and brown sugar together in a large bowl until creamy. Add flour, oats, vanilla extract, eggs, and salt; stir until just mixed. Spread batter into the prepared jelly-roll pan.
  3. Bake in the preheated oven until lightly browned, about 20 minutes. Cool brownies in the pan for 10 to 15 minutes. Spread 1/2 cup peanut butter on top of brownies.
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Reviews More Reviews

Most Helpful Positive Review
Sep 30, 2012

Don't have a jelly roll pan (not even sure what it is) put in a 9 x 13 dish. Took longer to cook, about 10 extra minutes with temp turned up to 350. Tasted great. Recommend chocolate frosting instead of peanut butter.

Most Helpful Critical Review
Jan 06, 2013

I like the flavor of this recipe, but I definitely think the recipe needs leavening other than the eggs. Were I to make it again, I would add perhaps 3/4 tsp baking soda and 1/4 tsp baking powder. Without the leavening, the baking time definitely needs to be increased. At twenty minutes with no leavening, this was nowhere near set enough to take out of the oven. I also would decrease the sugars to 1/2 cup each, as I prefer cookies that aren't so sweet.


17 Ratings

Jul 03, 2012

Don't try these without a glass of milk nearby! They were very rich! If you love peanut butter you will love these! I used salted butter so I cut the salt down to a teaspoon, I also added about 5 minutes to the cook time. Very easy to throw together. I will make these again but instead of frosting with peanut butter I may try chocolate just to break up the taste a little! Thank you for a great recipe!

Jul 04, 2012

very very yummy! It's really rich but it's still delish! It's perfect with vanilla ice cream. Tones down the sweetness a little =)

Jan 23, 2013

The bars have wonderful peanut butter flavor, but was just a little too sweet for my personal tastes, however my husband liked it. My concerns when making this recipe was that other than the eggs, there was no leavening agent which if added, I think would have given it a better texture. I frosted it with a chocolate frosting and if I were to make it again would also add chocolate chips.

Nov 20, 2012

The kids and I loved this recipe! It wasn't so rich that it was over-powering, but it was a good sweet tooth satsifier. My youngest keeps asking for these since we made them last. One thing that I wasn't crazy about was the oatmeal in them was a tiny bit odd in texture, but thw next batch I mixed them extra hard and a bit longer and that broke up the oats enough to get rid of that texture issue. However the taste was spot on! I also had to bake a little longer as I used a 9x13 too.

Jul 01, 2014

Made this recipe for first . I am a beginning baker and it was easy to follow,had a fun experience. I changed it a little by putting chocolate icing on top . Family loved it.

Jun 24, 2014

This is delicious! I was a little nervous because my batter was not as runny as brownies usually are, but they turned out to be so yummy!! I whipped the peanut butter that goes on top and added powdered sugar to it. It turns into a frosting and oh is it ever delicious!!


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  • Calories
  • 338 kcal
  • 17%
  • Carbohydrates
  • 34.2 g
  • 11%
  • Cholesterol
  • 46 mg
  • 15%
  • Fat
  • 20 g
  • 31%
  • Fiber
  • 2.3 g
  • 9%
  • Protein
  • 8.2 g
  • 16%
  • Sodium
  • 456 mg
  • 18%

* Percent Daily Values are based on a 2,000 calorie diet.

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