
This roasted stuffed butternut squash is filled with fragrant basmati rice, sweet pomegranate seeds, creamy feta, and tender caramelized onions. A bright pistachio herb salsa adds crunch, freshness, and a lively lemon-chilli finish.
Preheat the oven to 180C/160C fan/gas 4. Halve the butternut squash lengthwise and scoop out the seeds. Rub the cut sides with olive oil, season with salt, and place the halves cut-side down in a snug flameproof roasting tin. Tuck the unpeeled garlic cloves into the squash cavities and roast for 1 hour, or until the flesh is tender.
Transfer the roasted squash and garlic to a board. Set the roasting tin over low heat, melt the butter, then add the sliced onions. Cook for about 10 minutes, stirring occasionally, until soft and lightly caramelized. Add the red wine vinegar and scrape up the flavorful browned bits from the base of the tin.
Squeeze the roasted garlic from its skins and stir it into the onions with the allspice and basmati rice. Season well, pour in 350ml hot water, and bring to a gentle simmer. Remove from the heat, cover the tin tightly with foil, and bake for 25 minutes. Place the squash halves cut-side up on the oven rack beside the tin while the rice cooks.
Fluff the rice with a fork and check that it is tender. If it still has bite and the tin looks dry, add a small splash of water, cover again, and bake for another 5-10 minutes. Scoop out some of the soft squash flesh, leaving about a 1cm border inside each skin so the shells hold their shape.
Fold the scooped squash into the rice, breaking it into bite-size pieces. Stir in the pomegranate seeds and crumbled feta. Spoon the filling back into the squash shells, arranging any extra rice around them in the tin. Return to the oven for 10 minutes to heat through.
For the salsa, mix the chopped pistachios, extra-virgin olive oil, dill, parsley, sliced green chilli, and lemon juice in a bowl. Spoon the salsa over the hot stuffed squash, then slice into wedges and serve.
Choose a squash that feels heavy for its size so the flesh roasts sweet and creamy. Keep a sturdy layer of squash inside the skin when scooping so the halves do not collapse. For a milder finish, remove the chilli seeds or use less chilli. Leftovers can be refrigerated in an airtight container for up to 2 days; add the herb salsa just before serving for the freshest flavor.