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Monster Cookie Oatmeal Fudge Bars Recipe

Move over plain ole’ Oatmeal Fudge Bars, there is a new recipe in town and they are about to rock your world.  Monster Cookie Oatmeal Fudge Bars have all of the traditional elements with extra special ingredients everyone will go crazy for.  Keep scrolling for the recipe and see the fun add-ins!
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Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

This recipe is literally the combination of a traditional Oatmeal Fudge Bar with a Monster Cookie.  I have been dreaming about it for at least a year and let me tell you something…it was worth the wait.

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What is a Monster Cookie?

Monster cookies are a peanut butter cookie that is packed with oats, chocolate chips and M&M’s.  They are normally soft, thick and just as addictive as they are delicious. 

What are Oatmeal Fudge Bars?

Oatmeal Fudge Bars are a thick oatmeal cookie that has a creamy chocolate layer, followed by another oatmeal cookie layer.  The cookie is soft, the center is silky smooth and texture is where it is at.

Disclaimer: This Monster Cookie Oatmeal Fudge Bars Recipe recipe may contain affiliate links and I will receive a small commission from any purchases you may make from these links. It’s one of the ways I support my site.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

When combined you have a cookie bar that perfectly marries the two already amazing cookies into one glorious bite!

How to make the Monster Cookie Oatmeal Layer

Begin by combining the butter, peanut butter, brown sugar and vanilla.  Brown sugar is the only sugar used and helps to get the compact and soft cookie texture.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Once that is smooth, add the eggs, baking powder and salt.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Finally, add the flour and quick oats but don’t over mix.  You want everything combined but the texture should be thick.

Why Quick Oats for your Oatmeal Fudge Bars?

Quick oats are a more finely ground whole oat which makes them more powdery.  That consistency helps them to be a great binder in this bar.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Now is where things get fun!  The add ins!  Mini chocolate chips, peanut butter chips and M&M’s, can either be mixed in by hand or on a low speed with the mixer.  You don’t want the M&M’s to break apart.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

In a 9×13 pan {sprayed with non-stick spray} add about 60% of the dough in the bottom and press it down.  You want it to cover the bottom of the entire pan in an even layer.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

How to Make the Fudge Layer

The fudge layer starts with a package of semi-sweet chocolate chips, a can of sweetened condensed milk and butter.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Put it in the microwave for 2 minutes and stir.  Add 30 second intervals until smooth.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Pour over the top of the monster cookie dough and spread out evenly.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Take the remaining 40% of the dough and crumble it over the top of the fudge layer.  There will be small areas where the fudge layer shows through and that is exactly how it is supposed to be.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Bake in a 350 degree oven for 30-35 minutes or until the top of the bars start to turn golden brown.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

It needs to cool completely at room temperature.  Once cooled, chill for an hour before cutting them into bars.

Cooling and chilling the bars will help them cut so much easier.  The next step just might be my very favorite…the first taste test.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

I have not been this excited about a recipe in a very long time.  These oatmeal fudge bars are SO delicious and wonderful!  Your family and friends will go crazy for them…if they last long enough for them to get a bite.

Monster Cookie Oatmeal Fudge Bars Recipe featured by top US food blog, Practically Homemade

Do you like these Oatmeal Fudge Bars?  Try these…

Monster Cookie Oatmeal Fudge Bars Recipes

Monster Cookies and Oatmeal Fudge Bars are combined to make the most wonderful cookie on the planet.
Course: Dessert
Prep Time: 1 hour 10 minutes
Cook Time: 35 minutes
Total Time: 1 hour 45 minutes
Servings: 15 cookie bars
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Ingredients

Oatmeal Layer

  • 3 cups brown sugar
  • 1 cup butter {softened}
  • 1/2 cup creamy peanut butter
  • 2 tsp vanilla extract
  • 3 eggs
  • 2 tsp baking powder
  • 1 tsp salt
  • 3 1/2 cups quick oats
  • 3 1/4 cups all purpose flour
  • 1/2 cup mini M&M's
  • 1/2 cup mini chocolate chips
  • 1/2 cup peanut butter chips

Fudge Layer

  • 14 oz can sweetened condensed milk
  • 12 oz semi-sweet chocolate chips
  • 3 tbsp butter

Instructions

  • Preheat oven to 350° and spray a 9x13 inch baking dish with non-stick spray.
  • Combine brown sugar, butter, peanut butter and vanilla extract in an electric mixer. Beat on medium speed to cream mixture until it is light and fluffy.
  • Next add the eggs, baking powder and salt on low speed. Slowly add the flour and oats, mix until just combined {don't over mix}. Add M&M's, mini chocolate chips and peanut butter chip, mix in by hand or on low speed of the mixer. Add 60% of the dough to the pan and press into the bottom of baking dish {being sure it is in an even layer}.
  • For the fudge layer, combine the chocolate chips, sweetened condensed milk and butter in a microwave safe bowl. Microwave for 2 minutes, mix and add 30 second intervals until the mixture is smooth. Pour the fudge over the bottom oatmeal layer.
  • Take the remaining dough and crumble pieces over the entire surface of the fudge. Bake for 30-35 minutes, or until the top is golden brown. Cool completely at room temperature and chill for at least 60 minutes before cutting into squares. Store at room temperature for up to 5 days.
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