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+ servings
3.67 from 3 votes

Chocolate Oat Bars

Thick chewy bars made with a brown sugar and oats crust and crumble, walnuts, plus a rich smooth chocolate layer.
Prep Time20 mins
Active Time25 mins
Cooling time30 mins
Total Time1 hr 15 mins
Course: Dessert
Cuisine: American
Keyword: decadent, hearty, rich, rustic, thick and chewy
Yield: 24
Calories: 359kcal


Crust and Crumble:

  • 1 cup butter, softened
  • 2 cups brown sugar, firmly packed
  • 2 large eggs
  • 2 tsp. vanilla extract
  • 2 1/2 cups all-purpose flour
  • 1 tsp. salt
  • 1 tsp. baking soda
  • 3 cups quick oats, uncooked

Chocolate Layer:

  • 12 oz. bag semi-sweet chocolate chips
  • 14 oz. can sweetened condensed milk
  • 2 Tbsp. butter
  • 1 tsp. vanilla extract
  • 1/2 tsp. salt
  • 3/4 cup nuts, chopped (like walnuts, pecans, or peanuts)


  • Preheat oven to 350°. Lightly grease bottom of 13 x 9" baking dish.

Crust and Crumble:

  • Cream butter and brown sugar together. Add eggs and vanilla. Mix flour, salt, baking soda together and add alternately with oats to batter. Mix thoroughly.
  • Set aside 1/3 of batter for crumble topping. Press other 2/3 of batter into bottom of baking dish.

Chocolate Layer:

  • In medium sauce pan, melt chocolate with condensed milk, butter, vanilla and salt over medium heat. Stir constantly to avoid scorching. Once all the chocolate is melted, pour over crust in baking dish.
  • Sprinkle nuts over chocolate layer.
  • Crumble reserved batter evenly over nuts. Bake for 25 - 30 minutes or until golden brown. Enjoy!


Calories: 359kcal | Carbohydrates: 186g | Protein: 33g | Fat: 62g | Saturated Fat: 36g | Trans Fat: 1g | Cholesterol: 125mg | Sodium: 573mg | Potassium: 1920mg | Fiber: 15g | Sugar: 138g | Vitamin A: 989IU | Vitamin C: 6mg | Calcium: 792mg | Iron: 13mg