01 - Preheat oven to 350°F. Grease a 9x13-inch baking pan thoroughly.
02 - Combine the cake mix, eggs, vegetable oil, and water in a large bowl. Mix until completely smooth. Pour batter evenly into the prepared pan.
03 - Beat together the cream cheese, butter, powdered sugar, and vanilla extract in a separate bowl until creamy and smooth.
04 - Drop spoonfuls of the cream cheese mixture evenly over the cake batter.
05 - Scatter chopped strawberries and white chocolate chips over the top. Sprinkle with shredded coconut if using.
06 - Using a butter knife, gently swirl the cream cheese, cake batter, and toppings together to create a marbled, earthquake effect. Do not overmix.
07 - Bake for 40-45 minutes, until the center is just set and a toothpick inserted comes out with a few moist crumbs.
08 - Cool completely in the pan before slicing and serving.