Ingredients

• 3 eggs , room temperature
• 1 1/2 cups whole milk , room temperature
• 1/2 teaspoon vanilla extract
• 1 1/2 cups flour
• 1 teaspoon coarse salt
• 1/2 cup sugar , divided
• 1 cup blackberries
• cooking spray
• 2 tablespoons unsalted butter , melted