Peel the potatoes, drop into salted boiling water, cook until almost fully cooked. The number of potatoes to fill the capacity in which you will bake your casserole.

To prepare the impregnation. To do this, whisk sour cream, egg, mustard, chopped garlic, chopped herbs and melted butter. I use the blender. In a separate bowl mash the stew with a fork. Grate the potatoes on a coarse grater. On the bottom of the greased baking dish put half of the potatoes. Then pour half of the impregnation. For the first time and may be less impregnation to add, literally 8-10 spoonfuls, spreading across the surface of the potatoes. Then will be guided to taste.

Then place a layer of corned beef. By the way, the stuffing can be any, but most importantly that she was ready, because in the oven the dish is just warm. On the meat put the remaining potatoes, pour the impregnation and sprinkle with grated on a coarse grater cheese.

Put in heated to 220 the oven for 15-20 minutes, until Golden brown.

Give the finished casserole to cool slightly and spread on the plates.

Turns out not complex, delicious and a full meal for the whole family. By the way, cold is good too. Bon appetit!