Line a 12-cup muffin pan with paper liners.
Stir graham crumbs, sugar, and salt in a bowl. Drizzle in melted butter and mix until moistened.
Divide mixture among liners, about 1 heaping tablespoon each. Press firmly to pack the crust.
Bake crusts at 350°F for 5 minutes. Let cool completely.
Beat cream cheese and powdered sugar until very smooth and fluffy, 1–2 minutes.
Mix in sour cream, lemon juice, lemon zest, and vanilla until creamy and combined.
Fold in blueberries gently so they stay whole.
Spoon filling over cooled crusts and smooth the tops.
Chill until set, at least 4 hours or overnight. Top with lemon curd and extra berries before serving.