Last week I whipped up a Shepherd's Pie in nothing flat. So easy that anyone named Bob can do it. Frozen vegetables as its filling (carrots, peas, corn, string beans). The recipe calls for 1 - 2 cups. I used three. You're looking at mashed potatoes here spread evenly over the top and then baked.
The secret of tasty mashed potatoes is this: Buttermilk, Parmesan cheese (1/4 cup), half a stick of butter, salt, pepper.
It's a keeper.