Heat large pot with olive oil and butter, add thinly sliced onions and begin to brown. Cook on medium, stirring constantly for about 5 minutes
Add sugar and sauté another 10 minutes or so until onions are soft and brown
Add garlic, salt, pepper, and thyme leaves and sauté another couple of minutes
Add flour and sauté for 2-3 minutes until flour is cooked, scraping bits from the bottom of the pan as you go
Add Worcestershire sauce and beef broth, Bring to a boil. Cover and allow to simmer about 5 minutes
Add gnocchi and cook for 3 to 5 minutes or according to directions on package
Spoon soup into individual ramekins or oven safe bowls. Top with shredded Gruyere and Parmesan
Please bowls on baking sheet under broiler for 2 to 3 minutes until cheese is bubbly.
