1 pound dried Great Northern or Cannellini beans (about 2-1/2 cups)
10 cups cold water
4 cups yellow onions (diced into 1/4-inch dice)
1 tablespoon minced garlic (plus 1/2 teaspoon)
2 tablespoons olive oil
1/2 tablespoon White wine vinegar
2 teaspoons salt (or to taste)
1/2 teaspoon Freshly ground black pepper
1 head radicchio (cut in half through the core, then thinly sliced crosswise, 2 cups)
1 cup dry unseasoned bread crumbs
1 cup Gruyère cheese (grated)
1/2 teaspoon dried thyme
1/2 teaspoon dried basil