01 - Preheat oven to 350°F. Generously grease a 9x13-inch baking pan with cooking spray or butter.
02 - In a large bowl, whisk together the strawberry cake mix, eggs, vegetable oil, and water until just combined. Pour the batter evenly into the prepared pan.
03 - In a separate bowl, beat the cream cheese and butter until smooth and creamy. Add powdered sugar and vanilla extract; beat until fluffy and well combined.
04 - Drop spoonfuls of the cream cheese mixture randomly over the cake batter. Sprinkle diced strawberries and white chocolate chips evenly over the top. Add shredded coconut if desired.
05 - Use a butter knife to gently swirl the cream cheese mixture through the batter, creating a marbled effect. Be careful not to overmix.
06 - Bake for 40-45 minutes, or until edges are set and center is slightly wobbly. The cake should remain gooey inside, so avoid overbaking.
07 - Allow the cake to cool in the pan for at least 30 minutes before slicing and serving. For cleaner cuts, refrigerate for 1 hour before serving.