In a large skillet, cook bacon until crisp; remove to paper towels. Reserve 2 tablespoons drippings. Saute onion in drippings until tender. Stir in the sauerkraut, sausage, brown sugar, garlic salt, caraway and pepper. Cook and stir for 5 minutes. Remove from the heat; add bacon. Set aside to cool. , In a large bowl, combine contents of the roll mix and its yeast packet. Stir in one egg, water and butter to form a soft dough. Turn onto a floured surface; knead until smooth and elastic, about 5 minutes. Cover dough with a large bowl; let stand for 5 minutes. , Divide dough into 16 pieces. On a floured surface, roll out each piece into a 4-in. circle. Top each with 1/4 cup filling. Fold dough around filling, forming a ball; pinch edges to seal. Place seam side down on greased baking sheets. Cover loosely with plastic wrap that has been coated with cooking spray. Let rise in a warm place for 15 minutes. , Beat remaining egg; brush over bundles. Sprinkle with poppy seeds. Bake at 350° for 16-17 minutes or until golden brown. Serve warm. Freeze option: Freeze cooled bundles in a freezer container, separating layers with waxed paper. To use, reheat bundles on a greased baking sheet in a preheated 325° oven until heated through.