Baked Delicata Squash with Onions & Rosemary

Every fall I look forward to the return of delicata squash at the market. I cook with them as often as I can because their season is limited. Baked delicata squash with onions and rosemary is one of my favorite ways to prepare this sweet and mild flavored winter squash. The squash and onions get sweeter as they bake and rosemary is the perfect complement. Add a dash of maple syrup if you want the dish to be a little sweeter. Or add a bit more salt for a more savory dish.

Ingredients You’ll Need for Baked Delicata Squash

  • Delicata squash
  • Yellow or sweet onion
  • Fresh rosemary
  • Extra-virgin olive oil
  • Sea salt
  • Maple syrup (optional)

How to Prep Delicata Squash

Make sure to use a sharp chef’s knife and keep your fingers safely away from the blade! I show you in the video below how to prep delicata squash, cutting it open, removing the seeds and pulp, and slicing it with the flat side down for safety.

Prepping Delicata Squash
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Baked Delicata Squash

Baked Delicata Squash with Onions & Rosemary

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  • Author: Rachel Zierzow
  • Prep Time: 15 mins
  • Cook Time: 40 mins
  • Total Time: 55 minutes
  • Yield: 46 servings 1x



2 delicata squash

1 yellow or sweet onion, sliced into crescent moons

~ 2 tablespoons extra-virgin olive oil (plus more for oiling baking dish)

2 teaspoons maple syrup (optional)

a few generous pinches sea salt

2 teaspoons fresh rosemary, destemmed and minced


Preheat oven to 350° F. Lightly oil 2 or 3 quart glass baking dish or line a sheet pan with parchment.

Slice off the ends of each squash. Cut each squash in half, then stand each piece up and cut in half lengthwise. Remove seeds with a spoon, scraping out all of the pulp as well. Place each piece flat-side down on the cutting board and slice into 1/2-inch pieces (half moons).

Place squash pieces and sliced onion in a large prep bowl or mixing bowl. Drizzle olive oil onto vegetables and toss to coat. Add maple syrup if desired. Sprinkle salt and rosemary evenly over the vegetables and then turn into baking dish.

Cover with aluminum foil and bake for 40 minutes (if using glass dish) or 35 minutes (if using metal pan), or until squash easily pierces with a fork. Be careful when removing foil to not burn yourself with the steam escaping from the dish.


If delicata squash is not available, substitute another sweet winter squash like kabocha squash or butternut squash, deseeded and cut into cubes or slices.

Baked Delicata Squash • Cook Love Heal by Rachel Zierzow

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