The Kitchn: How to make Thanksgiving leftovers lasagna
1 cup ricotta cheese
1/2 cup cranberry sauce
1 large egg
1 teaspoon finely chopped fresh herbs, such as thyme or sage
1/2 teaspoon kosher salt
1 1/2 cups turkey gravy, divided
1 (10-ounce) package no-boil or oven-ready lasagna noodles, divided
3 cups leftover sweet potato casserole or mashed potatoes, divided
1 1/2 cups shredded, cooked Brussels sprouts, divided
3 cups cooked, shredded turkey, divided
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