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Lunch Lady Brownies

The final dish
Total Time
1 hour 35 minutes
Prep Time
30 minutes
Cook Time
20 minutes
Rating
5 out of 5 stars
(1)

Ingredients

24 brownies
  • 1 cup (220g) unsalted butter, melted
  • 2 tbsp vegetable oil
  • 1/2 cup (50g) unsweetened cocoa powder
  • 1/2 tsp salt
  • 2 cups (265g) all purpose flour
  • 1 cup (200g) granulated sugar
  • 1 cup (200g) dark brown sugar, packed
  • 4 large eggs, room temp
  • 1 tbsp vanilla extract
  • 1/4 cup (55g) unsalted butter, softened
  • Pinch of salt
  • 1/4 cup (25g) unsweetened cocoa powder
  • 2 1/2 cups (270g) powdered sugar
  • 1/4 cup (55g) milk
  • 1 tsp vanilla extract
  • Rainbow sprinkles
DessertsKid-FriendlyBakingBeginner
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Preparation

Step 1

Preheat the oven to 350F and grease a 10×15 jelly roll pan or 9×13 baking pan.

Step 2

In a large bowl, whisk together the butter, oil, and cocoa powder.

Step 3

Stir in the salt, flour, and sugars.

Step 4

Whisk in the eggs and vanilla.

Step 5

Pour the batter into the prepared pan and spread it even.

Step 6

For the jelly roll pan, bake for 15-20 minutes. For the 9×13 pan, bake for 25-30 minutes.

Step 7

The brownies are done when the surface appears matte, bubbly, and the center is bouncy to the touch.

Step 8

Right when the brownies are pulled from the oven, make the frosting.

Step 9

In a bowl using a hand or stand mixer with the paddle attachment, mix together the butter, salt, and cocoa powder.

Step 10

Mix in the powdered sugar one cup at a time, followed by the milk and vanilla.

Step 11

Spread the frosting on the warm brownies and top with sprinkles.

Step 12

Allow the brownies to cool completely. Then slice and enjoy!

Step 13

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Chef's notes

This brownie recipe is very forgiving and flexible, so it can be baked in two different sized pans.
These brownies are best when they’re room temp or even slightly warm.
For a classic thin and fudgy brownie, bake in a 10×15″ jelly roll pan. This is my preference because I remember those school lunch cafeteria brownies being so thin in the best way.
A 9×13″ baking pan will yield the same tender and fudgy consistency, only thicker.
Always recommend baking in a light colored aluminum pan for best heat conduction.
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