Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   4      medium        potatoes -- peeled & quartered
     1/2  cup           skim milk -- or buttermilk
     1/2  teaspoon      salt
   1      pound         extra-lean ground beef
     1/4  cup           unseasoned dry bread crumbs
     1/4  cup           minced onions
   1                    egg white
   1      tablespoon    ketchup
   1      clove         garlic -- minced
     1/4  teaspoon      black pepper
   1      large         tomato -- thinly sliced
     1/2  teaspoon      dried oregano
     1/4  cup           shredded reduced-fat swiss cheese
     1/4  cup           crumbled feta cheese
     1/2  package       frozen spinahc -- thawed, squeezed
                        -- dry chopped (10-oz)

Preparation:

Cook potatoes in a large pot of boiling water until tender, about 20 minutes. Drain well. Add milk and salt. Mash until smooth. Set aside. In a large bowl, combine beef, bread crumbs, onions, egg white, ketchup, garlic, and black pepper. Mix well (using your hands works best). Pat beef mixture over bottom and up sides of a 9-inch pie plate. Layer tomato slices over beef. Sprinkle oregano over tomatoes. Spread Swiss and feta cheeses over tomatoes. Top cheese with chopped spinach. Spoon mashed potatoes over spinach. Spread evenly, leaving a 1-inch border around edges. (Meat and potatoes should not touch.) Smooth top. Bake at 350 degrees for 45 minutes. Let cool 5 minutes. Slice into wedges and serve.