Heat oven to 350°F. Butter a 2 1/2 quart baking dish. Set aside.
Melt butter over medium-low heat in a small saucepan. Remove from heat and pour into a bowl with the cheese, salt, pepper and onion to taste.
Cook macaroni according to package directions and drain. Place in the lightly buttered baking dish. Mix in cheese mixture, being sure to distribute evenly.
Break up tuna and mix into macaroni. Mix in bread pieces.
Beat eggs and milk together, then pour over macaroni, stirring to combine well. Sprinkle remaining cheese over top.
Bake in preheated 350° oven for about 25 to 30 minutes.
Contributor: pat ciesla
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