Berry Crumb Cake – Emile Henry USA

Ingredients

• 4 tablespoons butter, soened
• 3/4 cup sugar
• 1 large egg
• 1 teaspoon vanilla extract
• 2 cups plus 1 teaspoon all-purpose flour, divided
• 1 teaspoon baking powder
• 1/2 cup milk
• 2 cups mixed berries (frozen raspberries, blueberries and blackberries) - do not thaw
• 1/2 cup sugar
• 4 tablespoons cold butter, cut into small pieces
• 1/2 cup flour