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Classic Lunchroom Ladies Brownies Recipe - Fudgy, Nostalgic, and Easy

If you remember those thick, fudgy brownies from the school cafeteria, this recipe brings them right back to your kitchen. These brownies are dense, chocolatey, and topped with a simple icing that sets into a sweet, shiny layer. They’re easy to make with pantry staples and perfect for sharing.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings 24 servings

Ingredients
  

  • Butter: 1 cup (2 sticks), melted
  • Granulated sugar: 2 cups
  • Eggs: 4 large
  • Vanilla extract: 2 teaspoons
  • Unsweetened cocoa powder: 1/2 cup
  • All-purpose flour: 1 1/2 cups
  • Salt: 1/2 teaspoon
  • Milk: 1/4 cup (for the icing)
  • Powdered sugar: 3 cups (for the icing)
  • Additional cocoa powder: 1/4 cup (for the icing)
  • Optional mix-ins: 1 cup chopped walnuts or chocolate chips
  • Nonstick spray or butter: for the pan

Instructions
 

  • Preheat and prep the pan. Heat the oven to 350°F (175°C). Grease a 9x13-inch baking pan and line with parchment, leaving a slight overhang for easy lifting.
  • Melt the butter. Melt the butter on the stove or in the microwave until fully liquid but not sizzling. Let it cool for 2–3 minutes so it doesn’t scramble the eggs.
  • Mix the wet ingredients. In a large bowl, whisk together melted butter, granulated sugar, eggs, and vanilla until smooth and glossy, about 1–2 minutes.
  • Add the dry ingredients. Sift in cocoa powder, flour, and salt. Stir gently with a spatula until just combined. Do not overmix.
  • Fold in extras. If using nuts or chocolate chips, fold them in now. The batter will be thick—that’s perfect.
  • Bake. Spread the batter evenly in the pan. Bake for 20–25 minutes, until the center is set and a toothpick comes out with moist crumbs (not wet batter). Do not overbake.
  • Make the icing. While the brownies bake, whisk together powdered sugar, cocoa powder, and milk until smooth and pourable. Add a splash more milk if needed. The icing should be thick but spreadable.
  • Ice while warm. As soon as the brownies come out, pour the icing over the warm surface. Spread gently to the edges. The warmth helps the icing settle into that classic shiny layer.
  • Cool and slice. Let the brownies cool completely in the pan for clean slices. Use the parchment to lift out and cut into squares.