Preheat oven to 400°F (200°C) and adjust the rack to the middle position. Prepare an 18×13 sheet pan with parchment paper or foil. Peel, remove the seeds, then cut the butternut squash into a 1/2 dice, and place squash pieces on the prepared sheet pan. Rub the squash pieces with the grapeseed oil, 1/2 tsp salt, and 1/4 tsp black pepper. Roast the squash until lightly browned at the edges, about 35 minutes.
Coarsely chop the parsley and mint and add to a large bowl. Add the chopped cauliflower, quinoa and pomegranate. Once the butternut squash is cool enough to handle, add to the salad along with 3 tbsp of olive oil, the juice of 1 1/2 lemons, and a pinch of salt. Toss and taste. If desired, add the rest of the oil and lemon juice and more salt and pepper. Garnish the salad with the toasted almonds.