12 oz jarred roasted red peppers |
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One 28-ounce can no-salt-added whole plum tomatoes |
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Kosher salt and freshly ground black pepper |
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1/2 teaspoon granulated sugar |
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12 oz grated part-skim mozzarella cheese |
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15-ounce part-skim ricotta cheese |
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6 portobello mushrooms, stems discarded, caps sliced 1/4-inch thick |
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1 large bunch kale, stems discarded, leaves coarsely chopped |
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1/4 teaspoon crushed red pepper flakes |
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9 sheets no-boil lasagna noodles, such as Barilla |
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