Step 1
Preheat the oven to 350 degrees F (175 degrees C). Line a 9-inch baking pan with parchment paper. Grease parchment paper with vegetable oil.
Step 2
Melt butter in a microwave in a microwave-safe bowl; stir until smooth. Pour in sugar cocoa powder water and vanilla extract. Stir until well blended.
Step 3
Pour eggs into batter and mix until batter becomes shiny. Stir in flour quickly until thoroughly combined. Pour batter into the prepared pan.
Step 4
Bake in the preheated oven until a toothpick inserted into the center comes out clean 25 to 35 minutes.
Step 5
Remove from the oven and let cool for at least 30 minutes before transferring to the refrigerator to cool completely about 30 minutes more.
Step 6
Place 1/2 cup white chocolate chips into a microwave-safe bowl. Microwave until melted 1 to 1 1/2 minutes. Stir until well blended and mixture is smooth and yogurt-like in consistency.
Step 7
Stir red food coloring into white chocolate chips until it reaches your desired shade.
Step 8
Remove brownies from the refrigerator. Spread red-colored chocolate over the top in a stripe. Sprinkle with 1 tablespoon red and blue candy-coated chocolate pieces before it hardens.
Step 9
Melt another 1/2 cup white chocolate chips in a microwave. Stir until smooth.
Step 9
Stir blue food coloring into white chocolate chips until it reaches your desired shade. Spread onto top of brownies for a second stripe. Sprinkle with 1 tablespoon andy-coated chocolate pieces.