Family Tested & Approved
Mix sugar, flour, and grapenuts together.
Stir in eggs, one at a time.
Pour into 1 1/2 quart, well buttered or sprayed baking dish.
Bake at 375 degrees for 1 hour.
Check for doneness by inserting clean knife into center. The knife should come out clean and top should be golden brown.
Serve warm with whipped cream or vanilla ice cream.