Add squash, onions, garlic to large bowl and drizzle with olive oil, maple syrup and salt and pepper. Mix throughly.
Place all vegetables on grill; cook approximately 10 minutes--several minutes on high to get the grill effect, and then 5 minutes on medium to cook vegetables completely. (If you are not using a grill, follow the same instructions for oven roasting. After mixing, place vegetables on baking sheet and bake for 20 minutes at 375, or until squash is tender.)
Cook pasta according to package directions
Cool vegetables.
After vegetables are cooled, take ½ or, 3.5 cups of the grilled vegetables, and place in high speed blender. Add 1 cup of organic vegetable broth and sage. Blend until smooth
Add remaining 3.5 cups of vegetables to pasta.
Add sauce from blender and toss with pasta and vegetables.