Noodles and Filling
1 lb. dried lasagna noodles
1½ tsp. Diamond Crystal or 1 tsp. Morton kosher salt, plus more
2 large eggs
8 oz. fresh ricotta (about 1 cup)
1 oz. Parmesan, finely grated (about ½ cup)
1 cup finely chopped baby spinach (about 2.5 oz.)
1 tsp. freshly ground pepper
1 tsp. garlic powder
Sauce and Assembly
1 Tbsp. plus 1½ tsp. extra-virgin olive oil
2 medium shallots, finely chopped
4 garlic cloves, finely chopped
2 Tbsp. finely chopped thyme, plus leaves for serving
1 15-oz. can unsweetened pumpkin purée (such as Libby’s)
1 cup heavy cream
1 Tbsp. plus 2 tsp. Diamond Crystal or 1 Tbsp. Morton kosher salt
1 tsp. dried oregano
½ tsp. freshly ground nutmeg
1 tsp. freshly ground pepper, plus more
2 oz. Parmesan, finely grated (about 1 cup)
4 oz. low-moisture mozzarella, coarsely grated (about 1 cup)