Penne With Roasted Asparagus and Balsamic Butter

I found this at cooking.com and found it to have a very unique flavor. Cooking times are estimates.

• Ready In: 45 mins
• Serves: 4

Ingredients

• 1  lb asparagus
• 1  tablespoon olive oil
• 2  teaspoons salt
• 1⁄2 teaspoon black pepper
• 6  tablespoons  balsamic vinegar
• 1⁄2 teaspoon brown sugar
• 1  lb penne
• 1⁄4 lb butter, cut into pieces
• 1⁄3 cup  grated parmesan cheese, plus more for serving

Directions

1. Heat oven to 400.
2. Snap the tough ends off the asparagus and discard them.
3. Cut the spears into 1 inch pieces.
4. Put the aspargus on a baking sheet and toss with the olive oil and 1/4 tsp.
5. each of the salt and pepper.
6. Roast until tender, about 10 minutes.
7. Meanwhile, put the vinegar in a small saucepan.
8. Simmer until 3 T.
9. remain.
10. Stir in the brown sugar and the remainig 1/4 tsp.
11. pepper.
12. Remove from heat.
13. Cook the penne in a large pot of boiling, salted water just until done, about 13 minutes.
14. Drain the pasta and toss with the butter, vinegar, asparagus, Parmesan and the remaining 1 3/4 tsp.
15. salt.
16. Serve with additional Parmesan.