This Oatmeal Fudge Bars Recipe is made with a simple oatmeal cookie base and layered with a decadent fudge filling. A delicious sweet treat to share with all your family and friends.

Close up top view of sliced oatmeal fudge bars.

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Why You'll Love Oatmeal Fudge Bars

Delicious dessert that is made with a chewy oatmeal cookie base and a creamy chocolate fudge center.
Full of textures with crunchy, chewy and creamy all in just one bite!
Crowd pleasing treat perfect for pot lucks, parties, family gatherings or just enjoy yourself.
These bars look like they are complicated but they are super easy.

Oatmeal Fudge Bars Ingredients

Salted Butter
White Sugar
Light Brown Sugar
Eggs
Pure Vanilla Extract
Unbleached All Purpose Flour
Baking Powder
Salt
Old Fashioned Oats
Semi-Sweet Chocolate Chips
Sweetened Condensed Milk

Substitution Suggestions:

Salted Butter: Unsalted butter can be used. I suggest adding an additional ½ teaspoon of salt to the cookie dough.
Pure Vanilla Extract: Pure extract is always best. It will provide a more natural flavor rather than the imitation vanilla extract that can leave an off putting after taste in your baked goods.
Unbleached All Purpose Flour: If you like you can use white whole wheat flour, whole wheat flour or a blend of both.
Old Fashioned Oats: Rolled oats is what gives this dough the texture it needs to be chewy. I don't recommend using quick oats for this recipe.
Semi-Sweet Chocolate Chips: You can use dark chocolate chips or milk chocolate chips. Whichever you prefer.

Side view of an oatmeal fudge bar with bite taken out.

This oatmeal fudge bar recipe has an oatmeal base with a chocolate fudge layer that is sure to cure any sweet tooth craving!

How to Make Oatmeal Fudge Bars

In a stand mixer with paddle attachment or with hand mixer and large bowl, cream butter, sugar and brown sugar together until light and fluffy.
Then, add vanilla extract and eggs one at a time beating well after each egg.
Add the dry ingredients: all purpose flour, baking powder, and salt and mix just until combined.
Lastly, add the rolled oats 1 cup at a time, mixing slowly after each addition.

Oatmeal cookie base patted out evenly in glass rectangle baking dish.

In a 9x13 baking dish greased or lined with parchment paper, add ⅔ of the cookie dough and pat it out in an even layer.
In a microwave-safe bowl, combine semisweet chocolate chips, sweetened condensed milk, 2 tablespoons butter and a pinch of salt.

Chocolate fudge ingredients in black microwave safe bowl.

Melted chocolate mixture in black microwave bowl with red spatula.

Microwave for 1 minute, stir. If needed microwave an additional 15 seconds until the chocolate mixture is completely melted.
Stir in the vanilla extract.
Immediately spread the fudge filling evenly over the cookie base.
Then take pinches of the remaining oatmeal mixture and lay it on top of the chocolate letting some of the fudge peek through.

Chocolate layer spread out evenly on top of oatmeal cookie layer.

Fully assembled bars in glass baking dish.

Bake in a 350°F preheated oven for 30-35 minutes until the cookie dough is golden brown along the edges and no longer looks glossy on top.
Let bars cool completely, then slice, serve and enjoy!

Pan of sliced oatmeal fudge bars sliced.

Want to try more oatmeal bars recipes? Try these Strawberry Rhubarb Bars, Apple Pie Bars or Blueberry Cereal Bars.

Storing Fudgy Oat Bars

Store these bars in an airtight container at room temperature. They'll stay fresh and chewy for 4-5 days.

These fudgy oat bars can also be frozen. Let the bars cool completely and then add them to a freezer safe air tight container between layers of wax paper. Thaw at room temperature for a few hours before enjoying.

Tips for Fudgy Oatmeal Bars

Line the baking dish with parchment paper leaving an inch overhang on the long edge so you can easily lift the bars out of the dish once cooled.
Spray your hands with cooking spray before patting dough into baking dish. This will prevent the dough from sticking to you and creating a mess.
Don't microwave the chocolate for too long or it will seize. Use 15 second intervals and stir well in between.
For best results do not overbake the bars. The base needs to have golden brown edges and the top cookie will be golden brown and no longer look glossy.
Let the bars cool completely before slicing. The filling needs time to cool and set so the bars stay in tack when sliced.

Side view of two oatmeal fudge bars stacked next to other bars.

More Dessert Bar Recipes:

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Oatmeal Fudge Bars Recipe

This Oatmeal Fudge Bars Recipe is made with a simple oatmeal cookie base and layered with a decadent fudge filling. A delicious sweet treat to share with all your family and friends.

Course: Dessert

Cuisine: American

Prep Time: 15

Cook Time: 30

Servings:

Author: Heather

Ingredients

Dough:

1 cup salted butter, softened
1 cup sugar
1 cup brown sugar
2 large eggs
1 teaspoon pure vanilla extract
1¾ cups all purpose flour
½ teaspoon baking powder
¼ teaspoon salt
3 cups old fashioned oats

Fudge:

1½ cups semi-sweet chocolate chips
14 ounces sweetened condensed milk
2 tablespoons salted butter
small pinch salt
1 teaspoon pure vanilla extract

Instructions

Preheat oven for 350°F and grease a 9x13 baking dish with nonstick cooking spray or line with parchment paper.
In a stand mixer with paddle attachment or with hand mixer, cream together the butter, sugar and brown sugar until light and fluffy.
Then, add vanilla extract and eggs one at a time beating well after each egg.
Add the dry ingredients: all purpose flour, baking powder, and salt and mix just until combined.
Lastly, add the rolled oats 1 cup at a time, mixing slowly after each addition.
Add ⅔ of the cookie dough to prepared baking dish and pat it out evenly.
In a microwave safe bowl, combine chocolate chips, sweetened condensed milk, 2 tablespoons butter and a pinch of salt. Microwave for 1 minute, stir. If needed microwave an additional 15 seconds until everything is completely melted.
Stir in the vanilla extract and immediately spread the fudge filling evenly over the cookie base.
Then take pinches of the remaining cookie dough and lay it over the fudge letting some of the fudge peek through.
Bake for 30-35 minutes until the cookie dough is golden brown along the edges and no longer looks glossy on top.
Let bars cool completely, then slice, serve and enjoy!

Nutrition

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