Preheat oven to 440°F (225°C)
Chop onion and add to a large frying pan with a tablespoon of oil. Saute over medium-high heat until onions begin to turn translucent.
Add minced soy meat, season with sweet paprika, salt, and black pepper and saute, until soy meat begins to brown.
Peel potatoes and slice into thin rounds.
Assemble your moussaka by layering half of the potatoes across the bottom of a casserole dish.
Spoon the sauteed soy mince on top of the potatoes, sprinkle with finely chopped parsley.
Arrange another layer of potatoes.
In a mixing bowl, combine cooking cream, milk, salt, and black pepper.
Spread the mixture on top of your moussaka. Sprinkle with some parsley.
Bake for about 45 minutes. Until potatoes are fork-tender, and the top gets golden. If the top is browning too quickly, cover it with a piece of kitchen foil.