|Mashed potato||1 Pound|
|Processed american cheese||6 Ounce|
|Canned chopped mushrooms||3 Ounce|
|Snipped chives||2 Tablespoon|
Thaw frozen scallops.
Cook scallops 1 minute in boiling, salted water.
Drain; cut large scallops in half.
Prepare potatoes according to package directions except reduce water by 1/3 cup.
Combine the hot potatoes and / cup cheese, stirring till cheese melts.
Beat in egg.
Add mushrooms, chives, dash pepper, and scallops.
Turn into 10x6x1 3/4-inch baking dish.
Arrange tomatoes atop potato mixture.
Sprinkle with remaining cheese.
Bake at 350Â° till heated through, 15 to 20 minutes.