This recipe is from Shirley McNevich's Mom's Best Recipes Vol 1. Published here with her permission.
Don't forget to check Shirley's blog.
(by Shirley McNevich)
1 - 6.5 oz. can drained tuna
1 cup shredded sharp cheese
1 - 3oz. package Philly cream cheese, cut into small pieces
1/2 medium onion (chopped)
2 cups milk
1 cup Bisquick
3/4 tsp. salt
Grease a 10" x 1.5" pie plate. In a bowl using a spoon, combine tuna, sharp cheese, cream cheese, and onion. Pour this mixture into the greased pie plate. In a blender, beat milk, Bisquick, eggs and salt--beat for 15 seconds on high. Pour this batter on top of the tuna mixture. Bake at 400 degrees for 35-40 minutes. Test with a knife--if inserted knife comes out clean, it's done.