Butternut Squash Lasagna without mozzarella

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> Cooking spray 3 cups chopped onion 10 cup fresh spinach 3/4 cup (3 ounces) shredded sharp[...]

1 tablespoon olive oil 3 garlic cloves , minced 1/4 cup fresh basil , chopped (or 4 tsp. dried) 2 tablespoons fresh parsley , chopped (or 2 tsp. dried) 2[...]

6 cups (1/2-inch) cubed peeled butternut squash 2 tablespoons extra-virgin olive oil, divided 2 tablespoons chopped fresh sage 12 garlic cloves, unpeeled[...]