Boil water in a saucepan. Add oats and butter. Let oats soak for ten minutes. Stir in the cornmeal, sugar, salt, milk, peanut butter, and egg. Mix thoroughly. Add the flour, one cup at a time (you may not need the entire amount) until a stiff dough forms. Knead dough on floured surface until smooth, about 3 minutes. Roll to 1/2" thickness. Place on a greased cookie sheet. Glaze: 1 large egg 2 tbsp. milk Mix well. Brush glaze on dough with a pastry brush. Bake in a pre-heated 325 degree oven for 35-45 minutes or until golden brown. Cool completely.