01 - Preheat the oven to 350°F. Grease a 9x13-inch baking dish thoroughly with cooking spray or butter.
02 - In a large mixing bowl, combine the strawberry cake mix, eggs, vegetable oil, and water. Beat with an electric mixer on medium speed for 2 minutes until smooth and well incorporated. Pour the batter into the prepared baking dish, spreading evenly.
03 - In a separate bowl, beat the softened cream cheese and butter together using an electric mixer until creamy and smooth, about 2 minutes. Gradually add the powdered sugar and vanilla extract, continuing to beat until fluffy and well combined.
04 - Drop spoonfuls of the cream cheese mixture randomly over the surface of the cake batter. Use a butter knife or skewer to gently swirl and marble the cream cheese through the batter, being careful not to overmix.
05 - Sprinkle the diced strawberries, white chocolate chips, and shredded coconut (if using) evenly over the top of the swirled batter.
06 - Bake for 40 to 45 minutes. The cake is done when the edges are set and slightly golden, but the center still has a gentle, gooey appearance characteristic of the earthquake effect.
07 - Allow the cake to cool in the pan for at least 30 minutes before slicing. Serve warm or at room temperature for the best texture and flavor.