Oven Roasted Butternut Squash with Tangy Turmeric and Cumin Pickled Onions

Name: Oven Roasted Butternut Squash with Tangy Turmeric and Cumin Pickled Onions
Ingredients: 1 large butternut squash, cut into ¼ inch slices, skin on, seeds removed; 2 large or 3 medium red onions, shaved with a mandolin slicer; 1.5 tblsp oilve oil; Salt and pepper to taste; ½ cup parmesan cheese, coarsely shaved; ¼ cup lightly toasted walnuts, coarsely chopped; ¾ cup red wine vinegar; 2 tsp sea salt; 3 tblsp honey; 1 dried bay leaf; 1 tsp cumin seeds; 1 tsp ground turmeric; 2 whole cloves