Heat oven to 425 degrees
Prepare butternut squash
Boil water and cook pasta according to package directions
Heat olive oil in large pan
Add onions and garlic, cooked until softened
Once pasta is cooked al dente, drain and add to pan
Combine cottage cheese and prepared butternut squash in blender
Blend to desired consistency, adding milk as needed
Combine pasta and sauce in pan until thoroughly mixed
Transfer to 13x9 casserole dish
Top with breadcrumbs
Cook at 425 for 35-30 minutes or until breadcrumbs are toasted and casserole is heated through