Preheat the oven to 375°F and lightly grease a muffin tin or line it with paper liners.
Unroll the crescent dough and separate into 8 triangles.
Press each triangle into the muffin cups to form a base and slightly up the sides.
In a bowl, mix cream cheese, sugar, vanilla extract, and lemon zest until smooth.
Spoon a dollop of the cream cheese mixture into each crescent cup.
Top with a generous amount of blueberries.
Fold the corners of the crescent dough over the filling slightly (they won’t fully cover the top).
Bake for 13–15 minutes or until golden brown.
Remove from the oven, let cool slightly, and dust with powdered sugar before serving if desired.