Preheat the oven to 350℉. Line a 9”x13” pan with parchment paper. Set aside.
In a large mixing bowl, cream butter and sugar together with a hand mixer.
1/2 cup salted butter, 3/4 cup granulated sugar
Add egg, vanilla, and coconut extracts and mix until well blended.
1 large egg, 1 teaspoon vanilla extract, 1 teaspoon coconut extract
Add sour cream and beat until fully combined.
1/4 cup sour cream
Incorporate dry ingredients, mix until just combined.
2 cups cake flour*, 1 1/2 Tablespoons cornstarch, 1/2 teaspoon baking powder, 1/2 teaspoon salt
Drop batter but large spoonfuls into the prepared dish. Batter will be very thick. Spread batter evenly for uniform baking.
Bake for 18-20 minutes or until the edges are slightly browned. Don’t overbake.
Cool completely before frosting.
Beat softened butter until creamy, about 1 minute.
1 cup salted butter
Add powdered sugar, vanilla, and coconut extracts, salt, and 2 Tablespoons of heavy cream.
3 cups powdered sugar, 1 teaspoon vanilla extract, 1 teaspoon coconut extract, Pinch of salt, 2-4 Tablespoons heavy cream or milk
Beat until desired consistency is attained, thinning with more cream if needed.
Spread onto bars and top with shredded coconut.
1 cup shredded sweetened coconut