Buttercup Squash With Parmesan

Ingredients & Substitutions

Here I explain the best ingredients for my oven roasted buttercup squash recipe, what each one does, and substitution options. For measurements, see the recipe card.

Basic Ingredients:

For a plain roast, these are all you need:

• Buttercup Squash – This winter squash looks a lot like a kabocha squash in size and color, but often has a little ridge at one end, similar to a turban squash. Sometimes it doesn’t have this ridge.
  • What to look for: Peak season starts in late summer or early fall and goes through the winter. I look for a firm buttercup squash that feels heavy for its size.
  • Buttercup vs. butternut squash: Some of you have asked me about this. They actually look totally different! Buttercup squash is round and dark green, while butternut is tan with a long neck. Both have sweet, nutty, orange flesh, but buttercup is a little drier and denser.
  • Other squash options: Kabocha is a good substitute for this method. For a similar side, try my roasted acorn squash, roasted butternut squash, or roasted delicata squash. Follow those recipes for their own cutting and cooking instructions.
• Olive Oil – Adds flavor, helps the seasonings stick, and promotes browning and caramelization. Avocado oil is good too.
• Sea Salt & Black Pepper – Season both sides so every bite has some flavor.

Garlic Parmesan Coating:

You can roast buttercup squash plain with the ingredients above, but I like to add a Parmesan coating for crispy, savory edges that balance the sweet flesh. It also helps lock in moisture, so the outside doesn’t dry out. You’ll need:

• Grated Parmesan Cheese – Adds a browned, crispy coating that’s so good! I recommend finely grated Parmesan rather than large shreds, so it coats the wedges more evenly. Pecorino Romano works, too, but tastes sharper and saltier.
• Garlic Powder – Because… who doesn’t like garlic? I prefer garlic powder here because it spreads evenly over the squash and unlike fresh minced garlic, it won’t burn easily.
• Dried Thyme Leaves – For an earthy flavor that works well with the cheese. You can substitute 1 1/2 tablespoons of fresh thyme leaves, or use 1/2 tablespoon of Italian seasoning instead.

See my flavor variations below for more seasoning ideas!

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How To Cut Buttercup Squash

A flat base and a sharp knife make this hard squash easier to handle. Here’s how I cut mine into wedges. You can even do this in advance and store them in the fridge!

1. Trim the ends. Use a sharp carving knife on a sturdy cutting board to cut off the top and bottom. If the squash shape makes this difficult, you can cut them off after slicing in half instead. (You can see in my picture below, I wasn’t able to cut off the stem without removing a bunch of the flesh.)
2. Halve and scoop. Set the squash on a flat cut end, or its most stable side if you haven’t trimmed the ends yet, then slice down from stem to tip. Scoop out the seeds with a spoon. Trim away any remaining stem or woody cap.

3. Slice into wedges. Stand each half on a flat cut end and slice downward into 1-inch-thick wedges. I keep the rind on for roasting. It’s edible, but can stay chewy, so you can leave it on your plate and eat the tender flesh.

TIP: If your buttercup squash is too hard to cut, you can soften the skin in the microwave.

Pierce the whole squash in several places with a knife, place it on a microwave-safe plate, and microwave for 3-4 minutes to soften the rind. Let it cool until comfortable to handle before cutting. This is just to make slicing easier, so stop before the flesh cooks through.

How To Cook Buttercup Squash

I have step-by-step photos here to help you visualize the recipe. For full instructions with amounts and temperatures, see the recipe card.

1. Season the squash. While you preheat the oven, arrange the buttercup squash wedges on a large baking sheet in a single layer, with a cut side touching the pan and space between the pieces. Drizzle both sides with olive oil, then sprinkle with garlic powder, thyme, salt, pepper, and Parmesan, if using. (You can also toss the wedges in a large bowl, but they’re so big that you’d need a really huge one!)
2. Roast until tender. Bake, flipping the wedges halfway through, until the edges are browned and a fork slides easily into the thickest part of the flesh. I check the center as well as the edges, because browned cheese alone doesn’t mean the squash is cooked through.

Flavor Variations

I like the garlic-Parmesan version when I want a savory side, but the same wedges can go sweeter or spicier. If you’re looking for more buttercup squash recipes to make with your market haul, here are some other ways I’ve enjoyed:

• Maple Pecan – Omit the Parmesan, garlic powder, and thyme. During the last 5 minutes of roasting, drizzle the squash with 2 tablespoons of maple syrup and sprinkle with 1/4 cup of chopped pecans. (I use my Wholesome Yum Zero Sugar Maple Syrup here!) Adding them near the end helps keep the syrup and nuts from burning.
• Spicy – Add 1/2 teaspoon smoked paprika, 1/4 teaspoon cayenne pepper, and a pinch of chili powder to the original seasonings. This has been a reader fave!
• Herby – Replace the Parmesan, garlic powder, and dried thyme with 1 teaspoon each of chopped fresh rosemary, fresh thyme, and fresh sage. I love this version for Thanksgiving!

What To Serve With Buttercup Squash

I like this squash as the hearty side dish on the plate, with a simple protein and something fresh alongside it. Here are a few ways to turn it into dinner:

• Chicken & Turkey – My garlic butter chicken or paprika chicken picks up the savory seasoning in the buttercup squash. For a holiday meal, serve it with roasted turkey, or for a smaller gathering, air fryer turkey breast.
• Beef & Pork – The squash’s sweet, nutty flavor goes well with a rich, savory main, like my sirloin steak, air fryer pork chops, or slow cooker pork tenderloin. The air fryer and slow cooker options also leave your oven free for the squash.
• Fish & Seafood – Try my baked salmon, lemon butter baked cod, or baked shrimp for a lighter main. I especially like a little lemon with seafood to balance the sweet squash and salty Parmesan.
• Salads – You can choose a simple green salad with creamy balsamic dressing, or for more fall flavor, try my pear salad or persimmon salad.