In a large skillet over medium heat, add the ground beef and cook until browned, about 5-7 minutes.

Add the chopped onion and minced garlic, cooking until the onion is translucent, about 3-4 minutes.

Stir in the crushed tomatoes, oregano, basil, salt, and pepper. Simmer for 10 minutes.

In a large pot of boiling salted water, cook the gnocchi according to package instructions until they float to the top, about 2-3 minutes.

Drain the gnocchi in a colander and set aside.

Preheat the oven to 180°C (350°F).

In a large mixing bowl, combine the cooked gnocchi with the Bolognese sauce and half of the parmesan cheese.

Transfer the mixture to a baking dish and top with mozzarella and cheddar cheese.

Bake in the preheated oven for 20 minutes, or until the cheese is bubbly and golden brown.

Remove from the oven and let cool for a few minutes before serving.