Preheat oven to 350 degrees F. Grease an 8x8 baking dish with nonstick cooking spray.
Cut the glazed donuts into small bite-sized pieces and place them evenly into the prepared baking dish.
Drizzle the melted butter over the top of the donut pieces.
In a medium bowl, whisk the eggs until frothy. Add the milk, heavy cream, and vanilla extract, whisking until fully combined to make a custard mixture.
Pour the custard mixture evenly over the donuts. Let soak for 10 minutes so the donuts absorb the liquid. Gently press donuts into the liquid if needed.
Bake, uncovered, for 45 minutes, or until the center is set and the top is golden brown.
Serve warm topped with whipped cream and fresh berries.
Notes
• Stale donuts work best because they soak up the custard without getting mushy.
• Add cinnamon, chocolate chips, or chopped pecans for extra flavor.
• Store leftovers covered in the refrigerator for up to 4 days.