Old-School Peanut Butter Cookie Bars (Lunch Lady Style)

 


Instructions

  1. Preheat the oven to 400°F (200°C). Grease or line a 13×18-inch sheet pan with parchment paper.

  2. Mix the dry ingredients: In a large bowl, whisk together the flour, sugar, baking soda, and salt.

  3. Blend the wet ingredients: In a separate bowl, stir together the milk, vanilla, and beaten eggs.

  4. Heat the base: In a saucepan, melt butter and peanut butter over medium heat until bubbling gently. Remove from heat.

  5. Combine: Stir the dry ingredients into the warm peanut butter mixture. Add the egg mixture and mix until smooth.

  6. Bake: Spread the batter evenly in the pan. Bake for 20 minutes, or until a toothpick comes out clean. Cool completely.

  7. Prepare the glaze: Melt butter and peanut butter in a saucepan. Remove from heat, stir in milk, then gradually whisk in powdered sugar until smooth.

  8. Frost the bars: Pour warm glaze over the cooled bars. Spread evenly and let set.

Storage Tips

  • Counter: Store covered for up to 3 days.

  • Refrigerator: Keeps well for up to 7 days (let warm to room temp before serving).

  • Freezer: Wrap tightly and freeze for up to 2 months. Thaw overnight.