Preheat the oven to 350 degrees F (175 degrees C). Butter the bottom and sides of an 8-inch square baking dish with melted butter.

Toss bread with chopped strawberries; place into the prepared pan. Beat eggs, milk, cream, strawberry preserves, sugar, and vanilla in a medium bowl until frothy. Pour over bread and lightly press down with a spatula until bread has absorbed milk mixture.

Bake in the preheated oven for 40 to 45 minutes, or until the top springs back when lightly tapped.