2 tablespoons vegan margarine 2 large leeks (white and pale green parts only), chopped 1 large onion, chopped 1 large potato, peeled and cubed 2 cups cubed butternut squash 1 cup diced carrots 1 Granny Smith apple, peeled, cored, and sliced 1/4-inch thick 1 quart vegetable stock 1/4 cup dry...