Coconut Southern Comfort Layer Cake

INGREDIENTS

• 2 3/4 cups cake flour plus more for pans
• 1 cup buttermilk
• 2 1/2 cups unsweetened shredded coconut (not reduced-fat)
• 1/2 teaspoon kosher salt
• 1 1/2 cups (3 sticks) unsalted butter, room temperature
• 1/2 cup coconut oil, warmed to melt
• 2 3/4 cups sugar
• 4 cups unsweetened coconut chips
• 1 tablespoon baking powder
• 5 cups powdered sugar
• 1 cup (2 sticks) unsalted butter, room temperature
• 2 8-ounce packages cream cheese, room temperature
• 1 1/2 tablespoons plus 1/4 cup Southern Comfort
• 2 teaspoons kosher salt
• Nonstick vegetable oil spray
• 5 large eggs