Creating Mummy Brownies is an exciting adventure. Follow these steps to ensure success:

1. Preheat Oven: Set your oven to 350°F (175°C) and grease a 9×13 inch baking pan.
2. Melt Butter: In a microwave-safe bowl, melt the unsalted butter. Let it cool slightly.
3. Mix Sugar and Eggs: In a large mixing bowl, combine the melted butter and granulated sugar. Beat in the eggs, one at a time, followed by the vanilla extract.
4. Combine Dry Ingredients: In another bowl, sift together the all-purpose flour, cocoa powder, baking powder, and salt.
5. Add Dry to Wet: Gradually fold the dry ingredients into the butter, sugar, and egg mixture. Stir until just combined; do not overmix.
6. Pour into Pan: Pour the batter into the prepared baking pan and spread it out evenly.
7. Bake: Bake for 30-35 minutes, or until a toothpick inserted in the center comes out mostly clean.
8. Cool: Once baked, remove from the oven and allow to cool in the pan for about 15-20 minutes. Then transfer to a wire rack to cool completely.
9. Melt White Chocolate: In a microwave-safe bowl, melt the white chocolate chips in 30-second increments, stirring in between until fully melted.
10. Decorate: Once the brownies are cool, cut them into squares. Use a fork or a piping bag to drizzle the melted white chocolate over the brownies, mimicking the look of mummy bandages.
11. Add Eyes: Place candy eyes on each brownie before the white chocolate sets to complete the mummy look.

These straightforward steps will guide you in creating these incredible Mummy Brownies effortlessly.