Beef with corn

1 tablespoon extra virgin olive oil , 1 turn of the pan (EVOO) 2 tablespoons unsalted butter , plus more for greasing 2 lbs ground chicken 2 garlic cloves ,[...]

1 lb ground beef 1 egg , slightly beaten 3/4 cup corn chips, crushed 1/2 cup milk 2 teaspoons salt 2 1/2 tablespoons flour 2 tablespoons butter 2 cups onions[...]