Butternut Squash Curry without safflower lime

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 ,[...]

2 tablespoons vegetable oil 1 large onion , chopped 3 garlic cloves , crushed 1 lb butternut squash, peeled and cut into 1-inch cubes 2 medium sweet potatoes[...]