Melt Chocolate and Butter: Place unsalted butter and semi-sweet chocolate chips in a medium saucepan over low heat, stirring until melted and smooth, about 5 minutes. Remove from heat and cool slightly.

Combine Sugar and Chocolate Mixture: In a large mixing bowl, pour in the melted chocolate mixture and add granulated sugar, stirring well until glossy.

Add Eggs and Vanilla: Whisk in eggs one at a time and then add vanilla extract until batter is smooth, about 2 minutes.

Mix Dry Ingredients: Sift together flour, cocoa powder, and salt in a separate bowl and gradually fold into the wet batter until just combined.

Prepare to Bake: Preheat the oven to 350°F (175°C) and grease an 8x8 inch baking dish. Pour the batter into the prepared dish.

Bake the Brownies: Bake for 20 to 25 minutes. Check doneness with a toothpick inserted in the center.

Cool Before Frosting: Remove from the oven and allow to cool completely in the pan on a wire rack, about 15-20 minutes.

Apply Chocolate Frosting: Spread chocolate frosting evenly over the cooled brownies.

Create Chewbacca Features: Use chocolate chips and candies to create Chewbacca’s face on the frosted brownies.