# What You'll Need:
→ Dry Ingredients
01 - 2 1/4 cups all-purpose flour
02 - 1 teaspoon baking soda
03 - 1/2 teaspoon salt
→ Wet Ingredients
04 - 1 cup unsalted butter, melted and slightly cooled
05 - 1 cup packed light brown sugar
06 - 1/2 cup granulated sugar
07 - 2 large eggs
08 - 2 teaspoons pure vanilla extract
→ Mix-ins and Toppings
09 - 1 cup semi-sweet chocolate chips
10 - 1/2 cup colored candy-coated chocolates (such as M&Ms; use school colors if desired)
11 - 4 ounces white chocolate, chopped or chips
12 - 1 teaspoon vegetable oil
13 - Optional: additional colored sprinkles for decoration
# How to Make It:
01 - Preheat oven to 350°F. Line a 9x13-inch baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium mixing bowl, whisk together all-purpose flour, baking soda, and salt. Set aside.
03 - In a large mixing bowl, combine melted butter, packed light brown sugar, and granulated sugar. Whisk until smooth. Add eggs and vanilla extract, mixing until thoroughly integrated.
04 - Gradually fold the dry mixture into the wet mixture until just incorporated; avoid overmixing.
05 - Stir in semi-sweet chocolate chips and colored candy-coated chocolates.
06 - Distribute the prepared dough evenly in the lined baking pan.
07 - Bake for 23 to 25 minutes or until edges are lightly golden and a toothpick inserted in the center yields mostly clean results.
08 - Allow the bars to cool completely in the pan positioned on a wire rack.
09 - In a microwave-safe bowl, melt white chocolate with vegetable oil in 20-second increments, stirring after each interval until smooth.
10 - Drizzle melted white chocolate over the cooled bars using a spoon or piping bag. Apply sprinkles if desired.
11 - Allow drizzle to set fully. Lift bars from the pan using parchment overhang and cut into 16 equal squares.