Vegetables & Sides Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. 
Serving Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Acorn, Butternut Squash and Parsnips Gratin
A cozy autumn gratin of roasted winter squash and parsnips topped with melted sharp cheddar and herbed breadcrumbs.
Contains common allergens
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Instructions
5 steps- 1
Preheat the oven to 325°F (165°C). In a large bowl, combine the breadcrumbs, parsley, salt, oregano, thyme, and black pepper and stir well.
- 2
Add the acorn squash, butternut squash, parsnips, and olive oil to the bowl, tossing until the vegetables are evenly coated with the seasoned crumbs.
- 3
Coat a 2-quart casserole dish with cooking spray and spoon in the squash mixture, spreading it evenly.
- 4
Cover and bake for 1 1/2 hours, until the squash and parsnips are tender when pierced with a fork.
- 5
Uncover, sprinkle the shredded cheddar over the top, and bake an additional 15 minutes until the cheese is melted and bubbly. Garnish with an oregano sprig if desired and serve warm.
Images are for illustrative purposes only, may be inaccurate, and do not guarantee the presence or absence of specific ingredients. Listahan Family Score™
73/100
Good fit for most families
Score reflects how well this recipe fits a typical busy household. In the app, your Family Score is personalized to your household's allergens, kids, and pantry.
Nutrition
per serving140
Calories
5 g
Protein
10 g
Carbs
9 g
Fat
Estimated per serving. Actual values depend on the brands and portions you use.
Listahan cooking guide
Chef notes & practical guide
Technique notes, ingredient swaps, serve-alongside ideas, storage guidance, and equipment for this recipe.
Cultural context
The gratin is a French technique of baking sliced vegetables under cream and cheese until the top browns into a crust, and the word itself refers to that golden crust. This autumn version trades the usual potatoes for a trio of fall roots and squashes, a North American harvest-table riff that shows off acorn squash, butternut, and earthy parsnips together. It is a dish built for cold-weather gatherings, where the slow oven does the work and the sweetness of the squash plays against the savory cream.
Listahan note
This version layers three vegetables of different sweetness and density so each bite has range, and slices them thin so the gratin sets into clean layers rather than a watery jumble.
Technique cues
- Slice all three vegetables to the same thinness so they finish cooking at the same time and the layers hold together when cut.
- Warm the cream with garlic and seasoning before pouring it over so the gratin starts hot in the center and bakes evenly.
- Press the layers down and cover for the first half of baking so the vegetables steam tender, then uncover to brown the top into a proper crust.
Kitchen flow
- Parallel prep
- Warm the cream on the stove while you slice the vegetables, so the seasoned cream is ready to pour the moment the dish is layered.
- Make-ahead
- Assemble the whole gratin a day ahead and refrigerate unbaked; add 10 to 15 minutes to the bake time since it starts cold.
- Leftover move
- Cut leftovers into squares and crisp them in a skillet, or blend a portion with stock into a quick squash soup.
- Cleanup rhythm
- Butter the baking dish well so the cheese crust releases, and soak the cream pot right away before the dairy sets on the bottom.
Ingredient brief
Role, handling, and swap guidance for each key ingredient.
butternut squash
sweet creamy layer
Purpose: Butternut bakes into a smooth, sweet layer that binds the gratin and contrasts the firmer parsnip.
Handling: Peel and slice thin, ideally on a mandoline for even rounds.
Adaptation: Kabocha or sweet potato can stand in for a similar sweet, starchy layer.
acorn squash
earthy structure
Purpose: Acorn squash holds its shape a bit more and adds a slightly nuttier, less sweet note to balance the butternut.
Handling: Peel, seed, and slice thin; its ridged shape means cutting into wedges first makes peeling easier.
Adaptation: Delicata squash can replace it and has an edible skin, saving the peeling step.
parsnips
savory earthy depth
Purpose: Parsnips bring a peppery, earthy sweetness that keeps the gratin from tasting one-note sweet.
Handling: Peel and slice thin, halving any thick woody cores out first.
Adaptation: Carrots give a sweeter, less peppery result; turnips give a sharper one.
heavy cream
binding sauce
Purpose: Cream reduces and clings to the vegetables, carrying the seasoning and creating the silky body of a gratin.
Handling: Warm gently with garlic, salt, and a grating of nutmeg before pouring over the layers.
Adaptation: Full-fat coconut milk makes a dairy-free version with a subtle sweetness that suits the squash.
Gruyere cheese
browning crust
Purpose: Gruyere melts smoothly and browns into the nutty, savory crust that defines a gratin.
Handling: Grate and reserve some for the top, layering the rest between the vegetables.
Adaptation: Comte, aged cheddar, or Parmesan all brown well; nutritional yeast plus breadcrumbs gives a dairy-free crust.
Technique notes
- Season every layer lightly as you build, not just the top, since the thick stack will taste flat if salt only sits on the surface.
- Let the gratin rest 15 minutes before cutting so the cream finishes setting and the slices stay neat instead of sliding apart.
- If the top browns before the center is tender, tent it with foil rather than turning the oven down, which would dry the edges.
Ingredient swaps
- Dairy-free option
- Use full-fat coconut milk in place of cream and a breadcrumb-and-nutritional-yeast topping for the browned crust.
- Lighter direction
- Replace half the cream with vegetable stock and rely on the cheese top for richness; the gratin will be looser but lighter.
- Gluten-free note
- This gratin is naturally gluten-free as written; if you add a crumb topping, use gluten-free breadcrumbs.
Serve alongside
- roast turkey or chicken
- sauteed brussels sprouts
- a peppery arugula salad
- cranberry sauce
- oaked Chardonnay
- dry apple cider
- sparkling pear juice
Serving suggestions only — check pairings for your household's allergens.
Storage & reheating
- Refrigerate covered for up to four days; reheat in a 350F oven so the top re-crisps and the cream loosens evenly. It freezes acceptably for up to two months, though the texture softens; thaw in the fridge and reheat covered, then uncover to brown.
Equipment
- mandoline or sharp chef knife
- baking dish
- small saucepan for the cream
- box grater
Make this household-aware
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Plan it in Listahan
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