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4.6 from 105 votes

Fudgy Oatmeal Chocolate Chip Cookie Bars

Chewy oatmeal cookie bars with a thick layer of fudge in the middle! Whoa, hello chocolate overload!!

Prep Time
10 mins
Cook Time
10 mins
Cooling Time
1 hr
Total Time
1 hr 35 mins
Servings: 9
Calories: 650 kcal
Course: Baked Goods
Cuisine: American

Ingredients

  • ½ cup unsalted butter 1 stick, melted
  • 1 large egg
  • 1 cup light brown sugar packed
  • 1 tablespoon vanilla extract
  • 1 ½ cups old-fashioned whole-rolled oats not quick cook or instant
  • 1 cup all-purpose flour
  • pinch salt optional and to taste
  • 1 cup semi-sweet chocolate chips for batter
  • half of one 14-ounce can sweetened condensed milk just eyeball it
  • about 1/3 cup semi-sweet chocolate chips for sprinkling

Instructions

    Cup of Yum
  1. Preheat oven to 350F. Line an 8-by-8-inch baking pan with aluminum foil, spray with cooking spray; set aside.
  2. In a large, microwave-safe bowl melt the butter, about 1 minute on high power.
  3. Wait momentarily before adding the egg so you don’t scramble it. Add the egg, brown sugar, vanilla, and whisk until smooth.
  4. Add the oats, flour, and stir until just combined, don’t overmix.
  5. Turn three-quarters of the batter out into prepared pan, smoothing it with a spatula to form a crust; reserve remainder and set aside.
  6. In a medium microwave-safe bowl, add 1 cup chocolate chips, pour sweetened condensed milk over the top, and heat on high power until the chips melt and mixture can be stirred smooth, about 45 to 60 seconds.
  7. Evenly pour chocolate mixture over crust, smoothing the top lightly with a spatula. Work somewhat quickly because mixture begins to set up after a couple minutes.
  8. Evenly crumble the reserved oatmeal mixture over the chocolate layer. I find it easiest to make heaping 1-tablespoon-sized ‘blobs’, and after all the blobs are in the pan, smoosh and smooth them together with a spatula. The entire surface will not be covered and there will be some gaps.
  9. Bake for about 25 minutes, or until top is set; it should be very pale in color for soft bars; golden colored means bars will be crunchier.
  10. Evenly sprinkle bars with about 1/3 cup chocolate chips, or as desired. Chips will soften and melt slightly. Avoid jostling the pan because it will cause chips to melt more rather than stay intact.
  11. Set pan aside and allow bars to cool in pan for at least 1 hour before slicing and serving.

Notes

  • Bars will keep airtight at room temperature for up to 1 week, or in the freezer for up to 6 months.

Nutrition Information

Serving 1 Calories 650kcal (33%) Carbohydrates 86g (29%) Protein 9g (18%) Fat 24g (37%) Saturated Fat 14g (70%) Polyunsaturated Fat 8g Cholesterol 68mg (23%) Sodium 109mg (5%) Fiber 2g (8%) Sugar 70g (140%)

Nutrition Facts

Serving: 9Serving

Amount Per Serving

Calories 650

% Daily Value*

Serving 1
Calories 650kcal 33%
Carbohydrates 86g 29%
Protein 9g 18%
Fat 24g 37%
Saturated Fat 14g 70%
Polyunsaturated Fat 8g 47%
Cholesterol 68mg 23%
Sodium 109mg 5%
Fiber 2g 8%
Sugar 70g 140%

* Percent Daily Values are based on a 2,000 calorie diet.