1 1/2 c Mushrooms; fresh, chopped 2 ts Butter; melted 1 ea Egg; lg, beaten 1 ts Oregano 1 c Cheddar; md sharp, shredded 6 ea Dk. rye bread slices;toasted 12 ea Tomato; slices, thin 1 x Celery salt 1 x Parsley Saute the mushrooms in the butter until tender. Remove from the heat and stir in the egg and oregano. Stir in the cheddar cheese. Spread about 3 Tbls of the mixture on each slice of toast. Top each slice with 2 slices of tomato and sprinkle with celery salt to taste. Broil for 5 minutes, or until the cheese melts and the sandwich is thoroughly heated. Garnish with the parsley and serve.