Put raw sliced onions in casserole. 3 ingredients later: Comfort food you didn’t know you needed

4 large onions, thinly sliced
2 cups shredded Gruyère cheese
1 cup beef broth
1 cup breadcrumbs

Preheat your oven to 375°F (190°C).

In a large skillet over medium heat, cook the sliced onions until they are soft and caramelized, about 20-25 minutes. Stir occasionally to prevent burning.

Transfer the caramelized onions to a baking dish and spread them evenly.

Pour the beef broth over the onions, ensuring they are well-coated.

Sprinkle the shredded Gruyère cheese evenly over the onions.

Top with breadcrumbs, spreading them out to cover the cheese layer.

Bake in the preheated oven for 20-25 minutes, or until the cheese is bubbly and the breadcrumbs are golden brown.