The best replacement for butternut squash is pumpkin.

The best alternatives to butternut squash are rated as following:
★★★★★  pumpkin
★★★★★  acorn squash
★★★★  sweet potato
★★  spaghetti squash
★★  yellow squash
★★  squash
★  kabocha
★  buttercup
★  winter squash
★  pumpkin nutrition
★  buttercup squash
  sweet potatoes
  pumpkin soup
  summer squash
  pumpkin pie
  banana squash

Your alternative for butternut squash is not listed? Suggest!
Speaking about butternut squash, one probably shouldn't forget about quinoa.

Other search terms related to butternut squash and their ratings are:
★★★★★ quinoa
You have in mind a companion for butternut squash and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of butternut squash in all years. Click on graph for more.
butternut squash
pumpkin
acorn squash