Starbucks Double Chocolate Brownies (Copycat Recipe)
INGREDIENTS:
1/2 cup unsalted butter, melted
1 cup granulated sugar
2 eggs
2 teaspoons vanilla extract
1/2 cup all-purpose flour
1/2 cup unsweetened natural cocoa powder
1/4 teaspoon salt, or to taste
2 cups semi-sweet chocolate chunks, divided
DIRECTIONS: