Can I make these ahead of time?
Yes. Bake the salami cups up to 2 days ahead and store in an airtight container. Fill them with the tomato-mozzarella mixture up to 2 hours before serving; add the balsamic glaze just before presenting.
What type of salami works best?
Use sliced salami that's thin enough to crisp but sturdy enough not to tear—typically 1/16-inch slices. Avoid pre-packaged deli meat; ask the butcher to slice fresh salami to order.
How do I prevent the salami cups from shrinking too much?
Bake at a moderate temperature (around 375°F) and monitor closely. Remove them when the edges just begin to darken and curl, typically 8–12 minutes. They continue to crisp as they cool.
Can I substitute the fresh mozzarella?
Yes—use ricotta, burrata, or even mascarpone. Avoid low-moisture mozzarella, which won't blend well with the fresh tomatoes.
How many servings does this make?
This recipe yields about 18–24 bites, depending on salami slice size. It serves 6–8 as an appetizer.