Coconut Chocolate Chip One Bowl Cake

Ingredients

• 284g (2 cups) all-purpose flour
• 159g (3/4 cup) granulated sugar
• 1/2 tsp baking soda
• 2 tsp baking powder
• 2 tsp cornstarch
• 1/2 Tbsp (14g) salt
• 141g (10 Tbsp) butter, softened
• 300g (~1 1/3 cups) sour cream
• 3 eggs
• 1 tsp vanilla extract
• 340g (2 cups) mini chocolate chips
• 100g (~1 cup) unsweetened shredded coconut or flakes (divided)
• 1 stick (112.5g) unsalted butter, softened
• 1 package (8 oz) cream cheese, softened
• 1 Tbsp coffee powder
• 2 tsp bourbon
• 172g (~1 1/3 cups) powdered sugar
• 2 tsp (~4.5g) cornstarch