Oatmeal Fudge Bars

1 . Stage

Preheat oven to 350 degrees F (175 degrees C).

2 . Stage

Combine 1 cup butter, brown sugar, white sugar, and eggs in a large bowl; mix until smooth.

3 . Stage

Mix flour, baking soda, and oats together in another bowl. Add to the butter mixture slowly; mix using an electric mixer until combined.

4 . Stage

Spread 3/4 the oat mixture into an ungreased 9x13-inch baking pan using a spatula. Press lightly into the bottom of the pan to make the surface even.

5 . Stage

Combine chocolate chips, sweetened condensed milk, 1/3 cup butter, and vanilla extract in a saucepan over medium-low heat. Stir until melted and smooth, about 2 minutes. Pour fudge over the oatmeal base and spread evenly.

6 . Stage

Drop tablespoons of remaining oatmeal mixture over the fudge. Press oatmeal down lightly to flatten and swirl into the fudge.

7 . Stage

Bake in the preheated oven until the top is lightly browned, 25 to 30 minutes; the chocolate should still be moist. Cool completely on a wire rack, about 45 minutes. Cut into squares.