Cheesy Creamy Winter Butternut Squash Gratin

Butternut squash gratin in dish with serving spoon.

5 from 1 vote

Cheesy Creamy Winter Butternut Squash Gratin

This easy Butternut Squash Gratin is creamy, cheesy, and perfect for winter! With its butter bean filling paired with some greens, it is enough to serve as a complete meal and can be adapted to work with whatever winter squash or pumpkin you have on hand.

Prep Time20

Cook Time40

Total Time1

Course: Dinner

Cuisine: Global

Servings: servings

Author: Margie Nomura

Ingredients

1 small knob of butter
1 tbsp olive oil
2 red onions halved and thinly sliced
2 garlic cloves crushed
8 sage leaves finely chopped
28 oz butter beans drained; about 4 1/2 cups
10 fl oz heavy cream (double cream) about generous 1 1/4 cups
6.75 fl oz milk about scant 1 cup
2 tbsp wholegrain mustard
1 butternut squash peeled, seeds removed, quartered, and thinly sliced (about 2lb 2oz/950 g prepared weight)
3.5 oz grated Gruyère about generous 3/4 cup
1.75 oz grated cheddar about scant 1/2 cup

US Customary - Metric

Instructions

Heat the butter and oil in a large frying pan. Add the onions and cook slowly over a low-medium heat, stirring every now and then, for 10 minutes until soft.
Add the garlic and sage and cook for a minute.
Tip in the drained butter beans, mustard, milk, and cream. Season well with salt and pepper.
Heat the oven to 392°F (200°C/180°C fan). In a large oven dish, spread a layer of squash, followed by half of the butter bean mix and a handful of the grated cheese.
Repeat with a second layer of squash, butter beans and cheese. Top it off with a final layer of squash and sprinkle over the rest of the cheese.
Place it in the oven for 40 minutes, by which point the cheese will be melted and golden and the squash tender. Allow to rest for 5 mins before serving.

Video

Notes

Make-ahead and storage

To store: Keep leftovers refrigerated in an airtight container for up to 5 days. Reheat in the oven or microwave.

Make-ahead: The butternut squash gratin will not freeze well because of the cream. But you can assemble it up to a day in advance. Keep it covered and in the fridge unbaked. Add a few extra minutes to the cooking time if baking straight from cold.

Nutrition