Balsamic Pasta Primavera - cooking recipe

Ingredients

1 lb penne pasta
1/2 cup balsamic vinegar
1 cup broccoli, heads chopped
1/2 red onion, thinly sliced
4 ounces cremini mushrooms, sliced
1 cup spinach, chopped
4 tablespoons butter
1/3 cup parmesan cheese, plus extra for garnish
salt
freshly grated pepper

Preparation

Boil a large pot of water for pasta, cook according to package directions. Drain and toss with 3 T butter.
In a small saucepan, bring balsamic vinegar to a boil over medium-low heat. Boil, stirring constantly about 5-10 minutes or until balsamic has become the consistency of maple syrup. There should only be about 3-4 T left. Be careful not to burn,.
Meanwhile, place 1 T of butter in a skillet with onions and salt and pepper to taste. Stir fry onions over medium heat until transparent. Add broccoli and mushrooms along with 1/3 cup water. Cook, stirring every now and then for about 5 minutes or until broccoli is tender and water has evaporated.
Mix pasta, balsamic reduction, cooked veggies, raw spinach and cheese together. Serve and garnish with extra pepper and cheese.