1 frozen pastry shell (thawed)
1 can (7 1/2 oz.) tuna, drained and flaked
1 1/2 c. shredded Cheddar (Swiss, etc.)
1/2 c. sliced onions
2 eggs
1/2 c. mayonnaise
1/2 c. milk
1 tbsp. cornstarch

Pierce pastry shell.

In large bowl toss together tuna, cheese and onions. Spoon into pastry shell.

In small bowl beat together eggs, mayonnaise, milk and cornstarch. Pour over cheese mixture. Bake 35 to 40 minutes at 350 degrees or until toothpick comes out dry.