Slow-Cooker Vegetarian Bolognese is a hearty and flavorful meatless version of the classic Italian pasta sauce. This bolognese is made with a combination of mushrooms, lentils, and vegetables, cooked in a rich tomato sauce with herbs and spices. The slow-cooker method allows the flavors to develop and the ingredients to become tender and delicious. Serve this vegetarian bolognese over your favorite pasta for a satisfying and comforting meal.