This is another easy vegan pasta dish that gets it sauce from a combination of the vegetables and the pasta water. Sauté the mushrooms while the pasta water heats up adding the onions and garlic to the mushrooms after the mushrooms are browned. When the pasta is cooked, add the kale to the vegetable mixture and put the drained penne on top. Use about a cup of pasta water to make a sauce stirring it into the pasta and vegetables. Cook together for a moment or two, serve in bowls, and garnish with a drizzle of olive oil. Dinner is ready!