Sheet pan chocolate peanut butter oatmeal cookie bars are simple to whip up, incredibly yummy, and can easily feed a crowd. In addition, these easy cookies are a total fan favorite!
I have a major thing for cookie bars. I love the simplicity of a great cookie bar. Sometimes, you just don’t want to scoop out two dozen cookie balls, one by one. And trust me, when it comes to cookies, especially great cookies like these campy chocolate peanut butter oatmeal cookies, no one cares what shape or form the cookies take, so long as they get to devour them, and stat.
Cookie bars also feed a crowd, which is perfect for SO many occasions. And because these sheet pan chocolate peanut butter oatmeal cookie bars in particular are one of those recipes that just turns out well every time – soft and chewy and rich and delicious – it’s a great standby dessert to make in a pinch any time you need to take a dessert to a gathering, serve up something sweet for a crowd, have a snack for a playdate, or add in a dessert at a party of your own. Also, I love gifting these bars since they stack up nicely.
Want even more amazing cookie bar recipes? Try our favorite chocolate chip oatmeal cookie bars, these hugely popular s’mores cookie bars, amazing frosted sugar cookie bars, apple crisp shortbread bars that our whole family loves, or my personal favorite: raspberry crumb breakfast cookie bars.
And, in case I haven’t said it enough lately, chocolate and peanut butter were just meant to be. They’re two total all-stars when paired together, and I’m not sure I’ve ever encountered a chocolate peanut butter dessert I didn’t like. Also, the oatmeal gives them that perfect chewy texture and the chocolate coating is pretty epic.
Basically, your friends and family are going to adore these rich and delicious chocolate peanut butter oatmeal cookie bars, so get to baking!
How to Make Sheet Pan Chocolate Peanut Butter Oatmeal Cookie Bars
Chocolate Peanut Butter Oatmeal Cookie Bars
- cups old-fashioned or rolled oats
- 1/2 cup milk (milk substitutes like soy and almond work great too)
- 1 cup brown sugar
- 1 cup white sugar
- 1 cup butter (you can also substitute out a vegan butter like Earth Balance)
- 1 cup creamy peanut butter
- 2 eggs
- 1 teaspoon vanilla extract
- 1 teaspoon baking soda
- 1 3/4 cups all-purpose flour
- 1 package chocolate chips, 2 cups - (milk chocolate, semi-sweet, or dairy-free Enjoy Life Chocolate Chips all work)
- Preheat oven to 350 degrees F. Grease a large rimmed sheet pan or jelly roll pan.
- In a small bowl, stir together oats and milk. Set aside so that the oats can start to soften.
- In a medium mixing bowl, cream together the brown sugar and white sugar and the butter until fluffy.
- Add peanut butter and mix well.
- Beat in the eggs one at a time.
- Add vanilla and stir.
- Mix in flour and baking soda.
- Mix in the oat and milk mixture. The batter will be sticky.
- Spread batter into greased pan. Bake for 20-25 minutes. The cookies should be lightly golden but not too dark.
- Melt the chocolate chips in a microwave-safe bowl by heating every 30 seconds, and stirring between each interval. It will usually take about 60 - 90 seconds total to melt the chips.
- When the bars come out of the oven, pour and spread the melted chocolate evenly over the top with a spatula.
- Allow to cool before cutting into squares.
Recipe adapted via Bless this Mess
By the way, you may have noticed that we often adapt our recipes or offer solutions to recipes to bake up vegan and dairy-free treats. That’s because our oldest daughter, Scarlett has MPIES (Milk Protein Induced Enterocolitis Syndrome). Over the years, we’ve changed a lot of our eating habits and I’ve made tweaks here and there in my baking to accommodate a dairy-free diet. We’re always experimenting with vegan and dairy-free recipes, in case you’re interested. Also, these chocolate peanut butter oatmeal cookies are incredibly moist, delicious, and can easily be made dairy-free; so basically, they’re perfect.
One of my secrets for yummy chocolate dairy-free desserts are these amazing chocolate chips. I use Dairy-Free Chocolate Chips (by Enjoy Life). The Enjoy Life Chocolate Chips are easily our favorite; they’re gluten-free, dairy-free, nut-free, and soy-free, and totally delicious. Also, they bake and melt incredibly well. Even Target carries them!
And speaking of chocolate, these chocolate peanut butter oatmeal cookie bars work great with milk chocolate, dark chocolate, semi-sweet, etc.; i.e., choose your favorite chocolate and roll with it. No matter what chocolate topping you go with, they’re going to taste AMAZING.
If you make your own chocolate peanut butter oatmeal cookie bars, be sure to tag me on social media (@glitterinclexi) so I can live vicariously through all of your sweet creations!
More Delicious Dessert Recipes from Glitter, Inc.:
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Love these yummy chocolate peanut butter oatmeal cookie bars? Head to our recipe page to check out what else we’re baking up in the kitchen!
Photos by Annie Timmons Photography for Glitter, Inc.