01 - Preheat oven to 350°F. Grease a 9x13-inch baking pan thoroughly with cooking spray or butter.
02 - In a large bowl, combine strawberry cake mix, eggs, vegetable oil, and water. Beat with electric mixer or whisk until completely smooth, about 2 minutes. Pour batter evenly into prepared pan.
03 - In a separate bowl, beat softened cream cheese and butter together until creamy. Add powdered sugar and vanilla extract, continue beating until smooth and lump-free.
04 - Drop spoonfuls of cream cheese mixture evenly over cake batter. Scatter chopped strawberries and white chocolate chips across the surface. Sprinkle shredded coconut over top if desired.
05 - Using a butter knife or skewer, gently swirl through the layers to marble the cream cheese filling with cake batter and distribute toppings. Create the earthquake effect without overmixing.
06 - Bake for 40-45 minutes until center is just set and a toothpick inserted comes out with moist crumbs. The top should appear slightly cracked and golden.
07 - Allow cake to cool completely in the pan, approximately 1 hour. Slice into 12 squares and serve. Cake can be served chilled or at room temperature.