Creating Mouthwatering Baked French Onion Gnocchi can be straightforward if you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Caramelize the Onions: In a large skillet, heat the olive oil and butter over medium heat. Add the sliced onions and cook, stirring frequently, for 15-20 minutes, until they become soft and caramelized.
3. Add Broth and Seasoning: Pour in the broth, add thyme, salt, and pepper. If using, sprinkle flour to thicken the sauce. Stir well and let it simmer for 10 minutes.
4. Cook Gnocchi: In a separate pot, bring salted water to a boil. Add gnocchi and cook until they float to the surface (about 2-3 minutes). Drain and set aside.
5. Combine: In a large baking dish, mix the cooked gnocchi with the caramelized onion sauce. Stir until the gnocchi are well coated.
6. Add Cheese: Top the mixture with Gruyère, mozzarella, and Parmesan cheeses.
7. Bake: Place the baking dish in the preheated oven and bake for 20 minutes, or until the cheese is melted and bubbly.
8. Garnish: Remove from the oven and allow it to cool slightly. Garnish with fresh parsley if desired before serving.

By following these steps, you will create an incredible dish that embodies the essence of French onion soup in a comforting gnocchi form!