
Eat the lasagne! You deserve it.
Preheat the oven to 180°c (fan-assisted).
Combine the squash, a really good glug of olive oil, a nice pinch of salt and a few grinds of black pepper on a baking tray. Use your hands to give everything a mix, then shimmy the squash into one even layer and roast for 35-45 minutes, mixing halfway through, or until the squash is soft in the middle and caramelised on the edges.
Next, melt the butter in the same frying pan over a low-medium heat. Let it bubble and crackle, swirling the pan occasionally, until the butter is covered with a layer of foam and the underneath has turned a golden brown. This will take 3–4 minutes. At this point, add the garlic and continue to cook for a further 2–3 minutes, still swirling occasionally, until the garlic is soft. You don’t want the butter to get too dark, so just keep an eye on it. Also, it might spit, so be careful.
Add the double cream, milk, a good grating of nutmeg and a good pinch of salt and black pepper. Then sprinkle in the gruyere and cheddar, saving a little handful of each for the top. Stir until the cheese has melted, not letting the pan come to a boil. Taste and adjust the seasoning, if needed; grating in extra nutmeg, if you think it needs it.
Increase the oven temperature to 200°c (fan-assisted).
Layer the squash, crispy sausage, lasagne sheets, sage leaves and cheesy sauce in a baking dish or shallow casserole pan. Sprinkle over any cheese you kept aside, then bake for 25-30 minutes, or until the pasta has cooked through and the top is golden and crisp (the pasta on the top of the lasagne will be crunchy, but the underneath should be soft and luscious - it's a gorgeous contrast). Serve with a zesty green salad on the side, if you like.
Recipe courtesy of georgieeats.co.uk