Loaded Oatmeal Blondies

5 from 1 vote

I’m kind of addicted to blondies. I’m also addicted to oatmeal cookies, so I married the two. Best decision ever!

2 Loaded Oatmeal Blondies recipe stacked on top of each other

Next week we are having laminate wood flooring installed in our entire first floor, including the kitchen. Which means we pretty much have to move out of the main living area for 3 days.

I have to clean out my pantry. I have to clean out my hutch, the bookshelves, the entry hall table. I have to empty my prop cabinet. Oh the horror…

{Actually, I’m going to be in Miami for BlogHer Food starting tomorrow through the weekend. So my husband has to do it. Lucky me, not so lucky him!}

It’s probably a good thing we have to clean everything out – we’ve lived here 2 years and have way too much stuff. I see a garage sale in our very near future.

I started a few weeks ago by cleaning out the pantry. (Who am I kidding? I have to do this every few weeks!) I found several half opened bags of chocolate chips, peanut butter chips, butterscotch chips, coconut, and various candies. Immediately I thought about making a loaded chocolate chip cookie or bar. But I’ve done that already.

When I realized I had butterscotch chips, my first thought was oatmeal. I love, love the combination of oatmeal and butterscotch. Scotcheroos are the best (especially in cheesecake bars…or toffee!)

Then it hit me: an oatmeal blondie.

Sometimes I can be a genius. 😉

Loaded Oatmeal Blondies sitting on parchment paper

These bars are the perfect marriage between oatmeal cookie and blondies. I used my favorite blondie recipe and edited it a bit to also be an oatmeal cookie. They’re filled with brown sugar and old-fashioned oats for a perfectly chewy bar cookie!

Bar cookies are just so much easier to make too – just press them in the pan and bake. No need to chill dough, no need to worry about if they’ll spread too much. And if you’re like me and line the pan with foil, there is almost no clean up. #barcookiesforthewin

The best part about these loaded oatmeal blondies are the mix-ins. You can seriously add whatever you want! Clean out your pantry and throw it all it. You want 2 cups total of add-ins. Here are some ideas:

  • Chocolate chips (white, semi-sweet, or milk)
  • Butterscotch chips
  • Peanut Butter chips
  • Toffee bits
  • M&Ms or Reese’s Pieces
  • Chopped up candy bars like Butterfingers or Reese’s Peanut Butter Cups
  • Coconut
  • Nuts

I used a combination of several of the above. I just poured different candies and chips into my 1 cup measuring cup until it was full – twice. I also topped the bars with some mini M&Ms for color. That’s totally optional, but it makes for pretty pictures. 🙂

What will you add to your loaded oatmeal blondies? I’m going to do peanut butter cups next time…are you surprised?

Loaded Oatmeal Blondies recipe collage

Since I need to clean out my closets for my floors, I was really hoping to take part in The Great Baking Closet Clean Out today, hosted by Java Cupcake and Make Bake Celebrate. Unfortunately, I couldn’t get my act together in time to actually clean everything out before today. But a bunch of bloggers got together to show you their organizing prowess, and they’re doing a giveaway to the container store! Go check them out!

But first, print this recipe. You’re gonna need it! 🙂

Loaded Oatmeal Blondies

5 from 1 vote
Yield 24 bars
Serving Size


  • 1/2 cup unsalted butter softened
  • 1 1/4 cups packed brown sugar
  • 1 egg
  • 1 teaspoon vanilla extract
  • 1/2 teaspoon salt
  • 1/2 teaspoon baking soda
  • 1 teaspoon cinnamon
  • 1 cup all-purpose flour
  • 1 1/2 cups Old Fashioned Oats
  • 2 cups of mix-ins I used a combination of chocolate chips, M&Ms, coconut, toffee chips, butterscotch chips, and peanut butter chips. Use whatever you have lurking in your pantry. Any combination works!


  • Preheat oven to 350°F. Line a 9x13” pan with foil and spray with cooking spray. (Foil is optional; I like using it for easy removal.)
  • Cream brown sugar and butter in the bowl of an electric mixer fitted with a paddle attachment. Add eggs and vanilla and beat until combined. Mix in salt, baking soda, and cinnamon. Add flour and mix until combined. Stir in oats. Stir in your mix-ins.
  • Press into prepared pan (dough is sticky, spray your hands with cooking spray to avoid it sticking to your hands). If you want, you can sprinkle a few more of your mix-ins on the top to make them look prettier (as I did with the mini M&Ms in the pictures).
  • Bake for about 25 minutes. (Be careful not to overcook - the center will still be jiggly when you take these out of the oven and they will finish cooking and firming up as they cool.) Cool completely before slicing into squares.

Nutritional information not guaranteed to be accurate

Caramel Crunch Blondies

Nutter Butter Butterscotch Blondies

Oatmeal Cookie Cups (use your favorite Kiss on top!)

Sweets from friends:
Brown Butter Vanilla Blondies by Sweet Treats and More
Peanut Butter S’more Blondies by Inside Brucrew Life
25 Bodacious Blondie Recipes by Something Swanky

Last Updated on May 13, 2020

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42 CommentsLeave a comment or review

  1. Wait, you’ve only been in your house for 2 years? How did I not know this?? And send me any cleaning-out-the-house and packing-up-everything tips you have… I’m SO not looking forward to doing that this summer. And being out of commission for a few weeks. That is the one bad thing about food blogging… But these bars? YUM! I need to try the oatmeal blondie combo sometime soon!

    1. It’s been 2 weeks since I baked anything and I’m getting shaky from the withdrawals…

      1. Want to come over tomorrow and use my kitchen? Or even tonight, if you want! I’m doing minimal baking, so it’s all yours! 😉 I hadn’t photographed anything for over a week until I shot yesterday’s frappuccino… It felt so weird at first, but thankfully it was more like remembering how to ride a bike than I thought!

  2. You are definitely a genius, Dorothy! 😉 I love everything about these oatmeal blondies. I’m craving them now!!

  3. I’ve been known to often claim that oatmeal is my enemy, because it’s healthy and I want my desert to be made entirely of chocolate. But then I usually go and bake something with oatmeal like 2 days later (my latest recipe involves oatmeal, too). What can I say, I change my mind a lot. Anyway, this recipe combines both, and I love it! I’m a huge fan of blondies, although I usually add peanut butter to mine. Call it an addiction 😉

  4. As soon as I saw this recipe in my email feed, I knew I had to make it. For my mix-ins, I used some plumped raisins and apricots, and five different types of chips. The result: Fabulous! Thanks so much for the recipe. The next time I make it (and there WILL be a next time), I think I’m going to try to figure out how to incorporate some Biscoff spread.

    1. That would be awesome! I haven’t done it, but you could probably reduce the butter just a bit, and add the same amount of biscoff as butter. You may just need a little more flour to compensate, but it’s a bar cookie, so if it’s gooey it doesn’t matter so much!

      1. Thanks for the advice regarding the Biscoff. I was thinking about the butter-Biscoff exchange, but the addition of extra flour hadn’t occurred to me.

        After I posted my comment, I remembered that I also added a few sweetened chopped dates as part of my mix-ins. I keep them on hand for use in banana bread, and they’re pretty good in these blondies, too. Thanks again!!

  5. Perfect way to clean out the pantry! Love that you combined blondies and oatmeal cookies!

  6. You are a genius, Dorothy! But I’ve been telling you this for months! This marriage could be the most beautiful yet! I can’t wait to try them!

  7. Oatmeal cookies and blondies in one? Perfect! I’m loving the oatmeal, butterscotch chips, and brown sugar combo!

  8. WOW!!!!!!!!! oatmeal cookies married to blondies!!!!???? this can’t get any better!!!!!! I love the colorful m&ms atop these oatmeal blondies!!!!

  9. I love these blondies! I love bars filled with lots of mix-ins, but never seem to make them. I’ll have to change that 😉