Preheat oven to 350°F. Lightly grease a jumbo muffin tin or spray with baking spray.
Cream butter, granulated sugar, powdered sugar, and vanilla for 1–2 minutes until smooth.
Add flour and salt; mix just until combined. Dough will look a bit crumbly—don’t overmix.
Scoop about 1/4 cup of dough into each muffin well. Press into the bottom and slightly up the sides to form a shallow well. Reserve remaining dough for crumble.
Spoon 1/2–1 tablespoon raspberry jam into each well. Crumble the reserved dough over the top (about 1 heaping tablespoon per cookie).
Bake 18–22 minutes, until lightly golden. Cool completely in the pan, then gently loosen edges with a knife to release.