Giant Salted Hot Fudge Cookies with Coffee Salt

Bahan-bahan (12 porsi)

• 1/4 cup unsweetened cocoa powder
• 2/3 cup whole milk
• 3/4 cups semi-sweet chocolate chips
• 5 ounces chopped dark chocolate or 3/4 cup additional chocolate chips ((I use 70% dark))
• 2 tablespoons salted butter, cubed
• 1 teaspoon vanilla extract
• 2 sticks (1 cup) salted butter, at room temperature
• 3/4 cup dark brown sugar
• 1/4 cup granulated sugar ((use 1/2 cup for a sweeter cookie))
• 2 large eggs, at room temperature
• 2 teaspoons vanilla extract
• 2 1/4 cups all-purpose flour ((+2 tablespoons, if needed, see note))
• 1 teaspoon baking soda
• 1 tablespoon flaky sea salt
• 1 tablespoon instant coffee powder ((optional))