Brown Butter Blueberry Coffee Cake

A moist coffee cake made with brown butter and loaded with juicy, ripe blueberries. Completely wonderful!

Ingredients

• Topping:
• 1/4 cup butter, softened and cut into small cubes
• 1/4 cup brown sugar
• 1/3 cup flour
• 1/2 teaspoon cinnamon
• For the cake:
• 1/2 cup unsalted good-quality butter (1 stick)
• 1 3/4 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1 cup granulated sugar
• 1/4 teaspoon salt
• 1 egg
• 1 egg yolk
• 1 cup whole or low-fat milk
• 1 1/2 teaspoons vanilla
• 2 heaping cups fresh (or thawed) blueberries, preferably organic
• 2 tablespoons all-purpose flour, to coat blueberries