1. Make the Crumb Topping
① Mix flour, brown sugar, and cinnamon. Cut in cold butter until crumbly. Set aside.
2. Prepare the Cream Cheese Layer
① Beat cream cheese, sugar, egg, and vanilla until smooth. Set aside.
3. Make the Cake Batter
① 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 & Bake
① 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 Cake
Extra 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).
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