Country-Style Fennel & Potato Tart - Ingredients

• 2 medium fennel bulbs, including the light-green portions, sliced very thin
• 1 small onion, sliced very thin
• 1 tablespoon butter
• 3/4 pound potatoes, peeled and sliced about 1/4 inch thick
• 2 cups milk
• 1/2 teaspoon salt
• Freshly ground pepper to taste
• 2 tablespoons chopped celery leaves
• 6 slices oval-shaped, hard-crusted, coarse-textured bread
• 4 eggs
• 4 cups mixed salad greens
• 3 tablespoons walnut oil
• 1 tablespoon dry red wine
• 2 tablespoons sliced scallion tops