Macaroni and Cheese with Greens and Squash

Ingredients

• 1/2 medium squash (, peeled and cubed)
• 6 cups washed (, chopped kale or spinach)
• 2 Tbsp butter
• 1 Tbsp olive oil
• Salt and pepper to taste
• 3 Tbsp all-purpose flour
• 2 cups milk and 1/4 tsp salt
• 1 tsp prepared or dry mustard
• 1 cup grated chedder (, Swiss or Parmigiano cheese or a mixture)
• 1/2 lb dry pasta (, such as elbow macaroni, rigatoni or penne)