01 -
Heat olive oil and butter in a large oven-safe, heavy-bottomed skillet over medium heat. Add the thinly sliced onions and sauté for 15–20 minutes, stirring frequently, until deeply caramelized and very tender.
02 -
Once onions are caramelized, pour in the red wine and cook, stirring, until the wine has completely evaporated.
03 -
Add kosher salt, black pepper, and garlic powder. Stir well to evenly distribute the seasonings.
04 -
Pour in the beef broth and Worcestershire sauce, stirring to combine. Bring the mixture to a gentle simmer.
05 -
Reduce heat to low. Add the uncooked gnocchi directly to the skillet and simmer for 3–5 minutes, stirring occasionally, until gnocchi are cooked through and tender.
06 -
Evenly sprinkle shredded Gruyère cheese over the skillet contents. Transfer skillet under a preheated oven broiler for 2–3 minutes until cheese is melted and golden brown.
07 -
Remove from the oven carefully. Garnish with freshly chopped parsley before serving.