French Onions:
- Cook 4 sliced onions in 2 tbsp of butter.
- Add in 1 tsp of Worcestershire sauce and 1 tsp of beef bouillon paste.
- Cook on low heat, stirring frequently until the onions caramelize (about 40 minutes).
Ricotta Filling:
- Mix together one egg, 1 cup ricotta, 1/3 cup of Parmigiano Reggiano, salt and pepper.
Garlic Béchamel Sauce:
- Melt 2 tbsp of butter with a clove of minced garlic, then add in 2 tbsp of flour to make a roux.
- Whisk in 2 cups of milk and one thyme sprig and simmer until it starts to thicken.
- Remove the thyme, season with salt, pepper and a pinch of nutmeg.
Assemble
- Add half of the béchamel to the bottom of a pan
- On an al dente lasagna noodle, spread the ricotta filling, top with French onions, and a sprinkle of Gruyère cheese.
