Radish Penne - cooking recipe

Ingredients

1 -2 bunch radish, including greens (1 large bunch or 2 smaller bunches)
1 tablespoon olive oil
1 onion, chopped
2 garlic cloves, chopped
8 ounces penne pasta
1/4 cup parmesan cheese

Preparation

Cook the pasta according to package directions, making sure to reserve a cup of the pasta water.
While pasta is cooking, chop the radishes and greens (you should have about a cup and half of radishes).
Heat the olive oil in a large pan. Saute the onions and garlic until translucent but not brown. Add the radishes and greens. Cook for about 5 minutes or until the radishes begin to soften and the greens wilt.
Toss the cooked, drained pasta with the vegetables and add a few tablespoons of the pasta cooking water to moisten, as needed. Drizzle on another tablespoon or so of olive oil. Add the parmesan cheese, salt and pepper to taste.