After soaking in milk, cubed, day-old bread is mixed with sauteed onions and a blend of finely diced cheeses. Shaped into patties, the disks are fried in a pan until crispy and golden brown. As the bread cakes cook, the cheese melts and forms a tasty crust and binds them into humble but delicious bites. Serve them with a green salad that's lightly tossed in lemon vinaigrette. Pass additional grated cheese as garnish.