Bake this irresistible Mattie'S Mystery Pie at home. Made with egg whites, sugar, crackers and pecans. Easy step-by-step instructions included.
This Mattie'S Mystery Pie relies on simple, everyday ingredients such as egg whites, sugar, ritz crackers, crushed and to 1 c. pecans. It comes together quickly and makes 4 servings, at about 429 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Mattie'S Mystery Pie delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.
Updated Jun 30, 2026