Blueberry Filling:

• 2 1/2 cups blueberries (fresh or frozen), divided
• 1 tablespoon all-purpose flour

Streusel Crumble Topping:

• 1 1/4 cup all-purpose flour
• 1/2 cup granulated sugar
• 1/2 cup light brown sugar (firmly packed)
• 1/4 teaspoon salt
• 1/8 teaspoon cinnamon
• 9 tablespoons unsalted butter, melted

Coffee Cake Batter:

• 1 cup all-purpose flour
• 1 cup cake flour
• 1 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/2 teaspoon salt
• 8 tablespoons unsalted butter, softened
• 3/4 cup granulated sugar
• 1/4 cup light brown sugar (firmly packed)
• 2 large eggs, at room temperature
• 1 1/2 tablespoons vanilla bean paste
• 1 cup sour cream, at room temperature
• 2 tablespoons lemon juice, freshly squeezed
• 1 tablespoon lemon zest

Lemon Cream Cheese Glaze:

• 4 tablespoons cream cheese, softened
• 1 tablespoon unsalted butter, softened
• 1 teaspoon vanilla bean paste
• 1/8 teaspoon salt
• 1/2 cup powdered sugar, sifted
• 1 teaspoon lemon juice, freshly squeezed
• 1 tablespoon whole milk (or 2 tablespoons), at room temperature