01 - Preheat oven to 350°F. Grease a 9x13-inch baking pan thoroughly 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 batter evenly into prepared pan.
03 - In a separate bowl, beat cream cheese and butter until smooth. Add powdered sugar and vanilla extract; beat until creamy and fluffy.
04 - Drop spoonfuls of cream cheese mixture randomly over the cake batter, creating distinct mounds across the surface.
05 - Sprinkle diced strawberries and white chocolate chips evenly over the top. Add shredded coconut if desired.
06 - Use a butter knife to gently swirl the cream cheese mixture through the batter, creating a marbled pattern without over-mixing.
07 - Bake for 40-45 minutes until edges are set but center remains slightly wobbly. The cake should be gooey inside when done.
08 - Cool in pan for at least 30 minutes before slicing. The center will set further as it cools but remain pleasantly gooey.