2 (6 1/2 oz.) cans tuna, drained and flaked
1 (10 oz.) pkg. frozen broccoli, thawed, drained and chopped
2 med. stalks (about 1 c.) celery, sliced
1 (11 oz.) can condensed cheddar cheese soup
2 tbsp. milk
1/2 tsp. onion salt
1/2 tsp. dried marjoram leaves
Biscuit Rounds (recipe below)

Heat oven to 400 degrees. Layer tuna, broccoli and celery in ungreased baking dish (8x8x2). Mix soup, milk, onion salt and marjoram; pour on tuna and vegetables. Heat in oven 15 minutes. While tuna mixture is heating, prepare Biscuit Rounds.

BISCUIT ROUNDS:

1 c. biscuit baking mix
1/4 c. butter, softened
3 tbsp. boiling water

Combine baking mix and butter. Stir in water with fork until dough forms in a ball and cleans side of bowl (dough will be puffy and soft). Divide into 6 parts; flatten each into a 3 or 4" round. Overlap the biscuit rounds on tuna mixture. Bake, uncovered, until biscuit rounds are golden, about 15 to 20 minutes.