Cut spinach in slivers if the leaves are large, and divide the leaves among 4 pieces of bread. Slice the steak across the short side on the diagonal to make wide pieces, and divide the slices among the sandwiches. Cover with remaining bread and cut the sandwiches in half. Serves 4 to 6. Wash potatoes and carrots.
Trim carrot ends.
Cut the vegetables smaller than 1 inch and place in a large pot with broth and enough water to make 6 cups. Add thyme and bring to a boil over high heat. Lower heat, cover the pan and simmer the mixture for 20 minutes. Vegetables should be soft. Add hot sauce, salt and pepper.