Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/2         Pound  medium mushrooms
     1/4         Pound  ground beef
     1/8      Teaspoon  salt
  1              Pinch  pepper
     1/8      Teaspoon  dried oregano leaves -- crushed
  2        Tablespoons  ketchup
  1            Package  sliced mozzarella cheese -- (6 ounce)
  35                    Melba toast rounds

Preparation:

Wipe mushrooms with a damp cloth. Remove and finely chop mushroom stems. In a small skillet, cook and stir ground beef until browned. Add chopped mushroom stems, salt, pepper and oregano. Saute 2 to 3 minutes until mushroom stems are tender. Drain and discard drippings. Stir in ketchup. Spoon about 1 tablespoon meat mixture on top of each toast round. Arrange toast rounds on ungreased baking sheet. Place 1 mushroom cap, rounded side up, on top of each toast round. Cut cheese into wedges large enough to cover mushroom but no larger than toast. Place 1 cheese wedge on top of each mushroom cap. Refrigerate. To serve, preheat oven to 350~F. Bake appetizers 10 to 15 minutes until cheese melts and meat mixture is hot. Arrange on a large platter; serve hot.

Nutritional Information:

383 Calories (kcal); 30g Total Fat; (71% calories from fat); 19g Protein; 8g Carbohydrate; 96mg Cholesterol; 699mg Sodium