Use gentle folding to keep berries near the surface and prevent sinking., Use frozen blueberries directly from the freezer to avoid excess moisture in the topping., Chill dough if cookies spread too much due to soft butter., Add half a teaspoon of lemon zest to dough for brightness., Stir tablespoon of blueberry jam into cheesecake mixture for deeper berry flavor., Fold white chocolate chips into dough for extra richness., Store cookies at room temperature for hours or in fridge up to 4 days., Wrap and freeze baked cookies for up to two months; thaw before serving., Reheat gently in microwave (10–15 seconds) or oven (300°F for 3–5 minutes) to restore softness.