Make the Crumb Topping ① Mix flour, brown sugar, and cinnamon. Cut in cold butter until crumbly. Set aside. 2. Prepare the Cream Cheese Layer① Beat cream cheese, sugar, egg, and vanilla until smooth. Set aside. 3. Make the Cake Batter① Whisk flour, baking powder, baking soda, and salt.② In another bowl, cream butter and sugar, then add eggs, sour cream, and vanilla.③ Gradually mix in dry ingredients. Fold in blueberries. 4. Layer & Bake① Spread cake batter in a greased 9×13” pan.② Dollop cream cheese mixture on top and swirl gently.③ Sprinkle crumb topping evenly.Bake at 350°F (175°C) for 40-45 mins until golden. 5. Cool & Serve!Best served slightly warm with a dusting of powdered sugar. Pro Tips for the Best CakeExtra juicy berries? Toss frozen blueberries in 1 tbsp flour first.More zing? Add 1 tsp lemon zest to the cream cheese layer.Make ahead? Freeze up to 3 months (thaw overnight). Enjoy!
