01 -
3-4 big sweet onions, cut into slices.
02 -
4 tbsp salted butter.
03 -
1 tbsp olive oil.
04 -
1 tsp salt (preferably sea salt).
05 -
1 tsp ground black pepper.
06 -
1 tsp granulated sugar.
07 -
1 lb ground beef or hamburger meat.
08 -
1 cup breadcrumbs seasoned with Italian herbs.
09 -
1 cup whole milk.
10 -
1 large egg.
11 -
1 packet of soup mix (French onion flavor).
12 -
1/2 cup sherry for cooking.
13 -
1/2 tsp Worcestershire sauce.
14 -
4 ounces cheese like Swiss, Gruyère, or provolone.
15 -
Fresh thyme, optional garnish.