Butternut Squash Curry without cayenne sauce

1 onion , chopped 1 -2 teaspoon canola oil 2 tablespoons curry powder 1 tablespoon cumin 1 tablespoon coriander 1 teaspoon cinnamon 10 ounces frozen spinach ,[...]

1 small butternut squash, about 1 1/2 pounds,peeled and cut into 1 inch pieces 2 tablespoons coarsely chopped shallots or 2 tablespoons yellow onions 1[...]