2 pounds ripe tomatoes (such as a mix of cherry, campari and heirloom varieties)
Salt and black pepper
5 ounces day-old country-style bread without crust
1 1/2 ounces thinly shaved or coarsely grated Parmigiano-Reggiano
3 ounces pitted green olives (such as Castelvetrano, picholine or Cerignola), roughly chopped
2 teaspoons finely grated orange or lemon zest (or a combination)
1 teaspoon fennel seeds or red-pepper flakes (or a combination)
2 garlic cloves
6 tablespoons olive oil
4 tablespoons red or white wine vinegar
Heat the oven to 325 degrees. Slice larger tomatoes into ½-inch rounds or wedges, and cut smaller tomatoes in half and spread out on a serving platter or individual plates. Season them generously with salt and also black pepper, if you’d like.
Tear the bread into small, 1-inch pieces, then pulse in a food processor until you have coarse crumbs.
In a large bowl, combine the bread crumbs, cheese, olives, zest, fennel seeds and red-pepper flakes, if using. Finely grate the garlic into the bowl then add 2 tablespoons olive oil and toss everything together very well.
Transfer the bread-crumb mixture to a sheet pan and place on a middle rack in the oven. Toast, stirring two or three times, until the crumbs are golden brown, the olives have shriveled slightly and your kitchen starts to smell a little like a pizzeria, 17 to 23 minutes. Let cool completely.
To serve, drizzle the tomatoes with the vinegar followed by the remaining 4 tablespoons olive oil. Just before you’re ready to serve, sprinkle the bread-crumb mixture over the top.