You don't need to like French Onion Soup to be a fan of these sandwiches. They are so good and delicious, you can serve them to company.
2 large yellow onions, sliced 1/4 inch thick
3 T. unsalted butter for the skillet
salted butter for the bread
1 T. olive oil
1 t. kosher salt
1 t. sugar
1 t. fresh thyme leaves
1/2 t. black pepper
3 T. beer, white wine or beef stock
4 slices sourdough bread
1/2 c. grated apple smoked gruyere or regular cheese
In a large skillet over medium heat, melt the unsalted butter and olive oil together. Add onions; stir to coat in the fat; cook undisturbed for 5 minutes.
Stir; add in salt, pepper, sugar and thyme; stir; cover; let cook. Stir occasionally until onions are soft and a deep golden in color. Reduce heat if onions are browning too soon.
Add in beer; scrape up any bits from the bottom of the skillet; remove pan from the heat.
On a preheated griddle or in a large skillet, place a slice of buttered bread, butter-side down; top with a little shredded smoked Gruyere. Add half of the onion mixture; add more cheese. Top with a second slice of buttered bread, butter-side up.
Flip over when the bottom is crispy and golden. Cook until second side is crispy and golden.
Serve.
2 servings.