1 1/4 cups          olive oil
1     pound         summer squash
1     large         onion
3     tablespoons   grated Kasseri
2     tablespoons   butter
4     cups          panko or bread crumbs
2                   eggs
2                   scallions
1     teaspoon      finely-chopped thyme
                    Salt
                    Freshly-ground black pepper
1     cup           all-purpose flour
1     tablespoon    butter