Lightly grease a 12-cup muffin tin with non-stick spray or butter. Preheat the oven to 350°F (175°C).
Slice sugar cookie dough into 12 even pieces. Press each piece into a muffin cup, forming a bowl shape that covers the bottom and sides.
Bake for 12–15 minutes, until golden at the edges and just set in the center. While still warm, press down the puffed centers with the back of a spoon. Let cool completely in the tin.
Beat softened cream cheese, sugar, and vanilla extract in a bowl for about 2 minutes, until smooth and fluffy.
Spoon cheesecake filling into each cooled cookie cup. Add 1 teaspoon of warmed strawberry jam on top, then swirl with a toothpick for a marbled effect.
Refrigerate for at least 1 hour until the filling sets. Before serving, top with a fresh strawberry slice or chocolate shavings.