For Pastry: Dissolve yeast in warm water. Stir in sugar, oil, salt, egg and 1 cup of the flour. Beat until smooth. Mix in enough remaining flour to make the dough soft but easy to handle. Turn onto well-floured surface; knead until smooth, about 5 minutes. Place in greased bowl; turn greased side up. Cover; let rise in warm place until double, about 1 hour.For Filling: Mix “beef,” cabbage, onion, water, salt, caraway seed and pepper in pan. Heat to boiling, reduce heat. Cover and simmer until cabbage is tender, about 15 minutes.

Punch down dough. Roll into a 16-inch square and cut into 4 inch squares. Place about 1/4 cup filling onto the center of each square, bring corners up and together, then pinch to seal. Place seam side down on a greased cookie sheet. Shape into rounds. Let rise again until double, about 1 hour.

Preheat oven to 375F. Bake until pastry is light brown, about 20-25 minutes. Brush tops with butter. If desired, wrap individually and freeze. If turnovers are prepared ahead and frozen, they should be covered and reheated at 350F° for about 20-30 minutes.