1. 1 can (6 1/2 oz.) tuna, drained
2. 2 c. shredded cheddar cheese
3. 1/4 c. sliced celery
4. 1/4 c. chopped onion
5. 3 tbsp. lemon juice
Bisquick baking mix
Mayonnaise
1 egg

Heat oven to 450 degrees. Mix 1 1/4 cups Bisquick baking mix, 3/4 cup mayonnaise or salad dressing and 1 egg. Stir in 1 to 5 ingredients above and spread over 6 slices of bread. Bake on ungreased cookie sheet until puffy and golden brown (about 10 minutes). Serve immediately.