2 to 4 large Romaine lettuce leaves washed, dried, center rib removed
6 slices bacon cooked
Whisk together sour cream, eggs and milk in a medium bowl. Divide baguette halves, cut sides down, between two 13 x 9 x 2-inch baking dishes. Pour egg mixture evenly over bread in each baking dish, about 1½ cups egg mixture in each baking dish. Cover and refrigerate overnight.
Remove baking dishes from refrigerator. Place baguettes on a tray. Discard any excess liquid from the dishes. Wash and wipe out baking dishes, and spray with nonstick spray. Place baguettes back in dishes, cut sides up. Preheat oven to 350°F.
Place dishes in oven. Bake 35–40 minutes, or until tops are puffed and lightly golden.
Toss together tomatoes and onions in a shallow bowl. If desired, season with salt and pepper.
Once French toast is removed from oven, transfer baguette bottoms to a large platter. Spread some of the avocado spread over bottoms. Assemble as follows: lettuce, bacon, tomato mixture. Divide remaining avocado spread between baguette tops. Place baguette tops cut sides down on tomato mixture. Quarter and serve warm.
For safe meat preparation, reference the USDA website.