peal off all veggies except potatoes - we want them with skins (not valid if potatoes not fresh)
cut potatoes into 5mm-thick (1/5 inch) discs (yes, with skins). roughly cut onions into wedges. cut zucchini and carrots into sticks.
spread some olive oil to the casserole or large oven proof heating pan (better use deeper one for there will be a lot of stuff)
evenly lay potatoes on bottom
lay other veggies on top (and chopped garlic, bacon), sprinkle your favorite spices and/or herbs - this step is almost free choice, "put all I want/have"
mix mustard and sour cream, adding caraway, little salt and pepper, and curry
spread mixture over veggies (sprinkle some grated hard cheese like Parmesan if available for added crispness and aroma)
put into preheated oven and cook until veggies are soft, everything melts or some nice golden crust formsEnjoy!