Jam Crumb Cake

Ingredients

• 1 cup all-purpose flour
• 1/2 cup sugar
• 1 3/4 teaspoons baking powder
• 1/4 teaspoon salt
• 3/8 cup unsalted butter, melted
• 1/2 cup milk
• 1 large egg
• 1/2 cup raspberry jam or 1/2 cup preserves
• Crumb Topping
• 3/8 cup unsalted butter, melted
• 1/4 cup packed brown sugar
• 1/4 cup granulated sugar
• 3/4 teaspoon cinnamon
• 1/8 teaspoon salt
• 1 cup all-purpose flour, plus
• 2 tablespoons all-purpose flour