Crab Cakes with crumbs

1 (8 ounce) can premium white lump crabmeat , drained 2 tablespoons mayonnaise 1 small egg 1/4 cup finely chopped green onion 1/4 cup finely chopped green[...]

2 tablespoons unsalted butter 2 tablespoons olive oil 3/4 cup small diced red onion (1 small onion) 1 1/2 cups small diced celery (4 stalks) 1/2 cup small[...]