This blueberry crumb cake is a delicious twist on the classic recipe, with the addition of a tangy lemon glaze. The cake is moist and tender, with a sweet blueberry filling that is topped with a buttery crumb topping. The lemon glaze adds a bright and zesty flavor that complements the blueberries perfectly. To make the cake, you will need flour, sugar, baking powder, salt, butter, eggs, milk, vanilla extract, and fresh blueberries. The crumb topping is made with flour, sugar, and butter, and is sprinkled over the top of the cake before baking. The lemon glaze is made with powdered sugar, lemon juice, and lemon zest, and is drizzled over the top of the cake once it has cooled. Serve the cake with a cup of coffee or tea for a delightful breakfast or dessert.