These are seriously addictive, and apparently originally came from my mom's cousin's daughter, aka Cousin Amy. It's on the same recipe card as Baked Apples and Danish.
1/2 cup butter
1 egg white
1/2 cup sugar
dash salt
1 tsp vanilla
3 cups pecan halves
Preheat oven to 300F. Melt the butter in a 9x13" pan. Beat the egg white until stiff. Add sugar, salt, and vanilla. Fold in pecan halves. Spread mixture over melted butter in pan. Toast 30 minutes.