Gooey Brownies

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Line a 2.2-quart glass baking pan with aluminum foil and spray with nonstick cooking spray.

Step 2
Combine sugar, butter, and vanilla extract in a bowl. Beat with an electric mixer until smooth and fluffy.

Step 3
Sift 3/4 cup flour, cocoa powder, salt, and baking soda together in a second bowl.

Step 4
Beat eggs, one at a time, into the sugar and butter mixture, until thoroughly combined. Add the flour mixture in 2 to 3 batches, mixing slowly until batter is just combined.

Step 5
Toss chocolate chips and walnuts with 1 1/2 tablespoons flour. Fold into the batter. Pour batter into the prepared baking pan and use a rubber spatula to level off the top.

Step 6
Bake in the preheated oven until edges are set and start to pull away from the sides of the pan, 20 to 30 minutes. Let cool until center firms up.