INGREDIENTS
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3 tablespoons extra-virgin olive oil, divided
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1 small sweet onion, diced
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4 garlic cloves, minced
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8 cups mixed greens (4 cups torn kale, 2 cups spinach, 2 cups arugula)
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One 15-ounce container part-skim ricotta cheese
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½ cup milk
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1 tablespoon chopped parsley
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1 tablespoon chopped thyme
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1 tablespoon chopped rosemary
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1½ teaspoons red-pepper flakes
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Salt and freshly ground black pepper
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1 package no-boil lasagna noodles
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½ cup grated part-skim mozzarella cheese