Main Dishesbonappetit4.0
Sheet-Pan Spinach Lasagna
Smart shortcuts like store-bought fresh noodles, frozen spinach, and a sheet pan deliver big lasagna flavor in a fraction of the time.
👥 6 Servings👤 Shilpa Uskokovic📖 bonappetit
🥘 Ingredients
Check off ingredients as you prepare them:
🍳 Cookware
- ●skillet
- ●wooden spoon
- ●oven
- ●saucepan
- ●blender
- ●peeler
- ●bowl
- ●pan
- ●baking sheet
📝 Preparation Steps
1
Place a rack in middle of oven; preheat to 375°. Heat 1 Tbsp. extra-virgin olive oil in a large skillet over medium-high. Cook 1 lb. hot Italian sausage, casings removed, 1 medium onion, finely chopped, and 2 garlic cloves, finely chopped, breaking up sausage into small pieces with a wooden spoon and stirring occasionally, until onion is softened and translucent and sausage is cooked through, 8–⏱️ 10 minutes. Remove from heat and let cool slightly. Break up any remaining large pieces of sausage with a fork or potato masher.
. extra-virgin olive oil1 Tbsp. hot Italian sausage, casings removed1 lbmedium onion, finely chopped1
2
Meanwhile, place one 1-lb. bag frozen spinach in a blender. Remove zest from 1 lemon in wide strips with a vegetable peeler; add zest to a medium saucepan. Add 3 cups whole milk, 1 tsp. Diamond Crystal or ½ tsp. Morton kosher salt, ½ tsp. freshly ground pepper, and remaining 4 whole garlic cloves to saucepan. Heat over medium-high, stirring occasionally, just until milk is steaming, about ⏱️ 5 minutes. Immediately pour over spinach and blend, starting on low speed and gradually increasing to high, until mixture is smooth and bright green.
1-lb. bag frozen spinach1lemon1whole milk3 cups. Diamond Crystal or ½ tsp. Morton kosher salt1 tsp
3
Toss 8 oz. low-moisture mozzarella, coarsely grated (about 2 cups), and 8 oz. Parmesan, finely grated (about 4 cups), in a large bowl to combine; set aside 1½ cups for topping. Add remaining cheese mixture to spinach sauce in blender. Pour in 1 cup heavy cream; blend just until combined.
. low-moisture mozzarella, coarsely grated (about 2 cups)8 oz. Parmesan, finely grated (about 4 cups)8 ozheavy cream1 cup
4
Pour one third of spinach sauce (about 2¼ cups) onto an 18x13" rimmed baking sheet and spread to edges of pan with a large spoon. If 1 lb. fresh lasagna sheets are in large strips, cut in half or thirds (this allows the noodles to become appealingly wavy in the oven). Arrange half of sheets in a single layer to cover sauce, trimming to fit as needed. Spoon sausage mixture evenly over pasta, then top with half of remaining sauce. Arrange remaining lasagna sheets in a single layer across surface. Pour remaining sauce over and spread evenly to cover pasta. Scatter reserved cheese mixture on top.
. fresh lasagna sheets1 lb
5
Bake lasagna until top is golden brown in spots, filling is set around edges, and a skewer or toothpick slides easily through center, 25–⏱️ 35 minutes. Let sit ⏱️ 10 minutes before cutting into squares.
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