Butternut Squash and Spinach Lasagna

Butternut squash and spinach lasagna brings orange roasted cubes and green leaves into distinct layers of a red-sauce pasta bake. This proposed version has sage-scented ricotta, oven-ready noodles and a mozzarella-Parmesan top. It does not use sausage or a white béchamel. A small measured addition of water loosens jarred marinara so the dry noodles have liquid to absorb during covered baking. The actual sauce yield, noodle brand, squash moisture and how cleanly eight portions cut need a kitchen trial.

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Build the two vegetable layers separately

Roast diced squash first so it is tender and has browned edges before assembly. Thaw and squeeze chopped spinach so its extra water does not thin the ricotta. Keeping the vegetables separate as the two middle layers makes the cut slice show what the title promises. This is an intentionally different format from Chefly’s existing pumpkin and Gouda stuffed shells, which use a different pasta shape and filling.

The Kitchn’s squash-and-spinach lasagna demonstrates the pairing, but adds Italian sausage, béchamel and cooked pasta. This proposed Chefly formula is a red-sauce, sage-ricotta version with oven-ready noodles and no meat. Its moisture and timing cannot be inherited from that reference; the particular dry noodle package should be checked in the test.

Measured pan components

Different jars labelled twenty-four ounces may not pour out to exactly three cups after residue, and noodle dimensions can vary. The planned division is approximate: three-quarter cup on the bottom, three-quarter cup in each middle layer and roughly one-and-one-quarter cups on top. Make sure the upper noodles are fully covered, then record any change to the measured sauce requirement. The recipe contains wheat and milk; check packaged components for other ingredients.

Roast, layer, cover and rest

1. Roast the squash. Heat oven to 400°F. Toss four cups peeled, seeded, diced butternut squash with two tablespoons olive oil, one-half teaspoon fine salt and one-quarter teaspoon black pepper. Spread on a rimmed sheet and roast approximately twenty-five minutes until tender and browned at the edges. Keep the oven at 400°F for the lasagna.
2. Prepare fillings. Thaw ten ounces frozen chopped spinach in advance and squeeze it firmly. Mix with fifteen ounces whole-milk ricotta and one tablespoon chopped fresh sage. Stir one-half cup water into a twenty-four-ounce jar of marinara; this is the sauce intended to soften the oven-ready pasta.
3. First two layers. Spread about three-quarter cup thinned sauce in a 9-by-13-inch dish. Add four dry oven-ready noodles, half the spinach-ricotta, half the roasted squash, three-quarter cup sauce and one-half cup mozzarella. Repeat once with four noodles, remaining filling and squash, another three-quarter cup sauce and one-half cup mozzarella.
4. Top and bake. Place the last four noodles on top and cover them with approximately one-and-one-quarter cups remaining sauce. Sprinkle with one cup mozzarella and one-half cup Parmesan. Cover tightly with foil, keeping it off the cheese if practical. Bake forty-five minutes covered, then uncover and bake approximately fifteen minutes more until bubbling and the noodles tender.
5. Rest and cut. Let the pan stand twenty minutes before cutting eight portions. Observe whether the slice holds and the noodles are fully cooked. Do not assume a golden top proves the center pasta is tender.

The working 135-minute total is thirty minutes active prep, twenty-five minutes roasting plus sixty minutes baking and a twenty-minute rest. Frozen spinach is specified already thawed and squeezed, so freezer thaw time is not included. Oven preheating may also add wall time. This is a planning estimate, not a tested “two-hour” promise. If the noodle package gives a different hydration method, test it rather than simply adopting its bake time while leaving the sauce unchanged.

How to avoid a wet or dry lasagna

Water collects at the bottom. Squeeze the spinach thoroughly and spread the squash in a single layer to roast rather than steam. Jarred sauce and ricotta vary. If a test pan remains watery after the full rest, measure what drained out of the spinach and revise the next batch; an unmeasured extra handful of flour is not a coherent fix.

The top noodles are hard. They need sauce coverage under the foil. Check whether the jar and half cup water actually yielded enough thinned sauce for the dish. The top allocation is larger than the lower ones on purpose. If still underdone, continue baking covered and record the extra interval.

Cheese sticks to foil. Tent the foil slightly above the top without leaving a wide gap that loses the covered-bake effect. If some cheese sticks, it does not change the noodle-doneness check. A first test can decide whether a different cover method is needed.

Portions slide apart. Give the baked pan the full twenty-minute rest. Ricotta, sauce and hot cheese will settle as it cools. If the layers still collapse, note the water content and whether too much filling was piled in one middle layer.

Variations and make-ahead work

Fresh spinach could replace frozen only after wilting, draining and measuring its cooked amount. A béchamel variation changes the entire sauce system; adding it to this card while keeping the same oven-ready noodle liquid is not a reliable one-line substitution. A different cheese can also change salt, melt and dietary suitability. The current ingredients are meatless, but a formal vegetarian claim depends on the selected Parmesan and packaged sauce, so the draft carries no diet label.

Components are easier to stage than a fully assembled untested pan: roast the squash, thaw and squeeze the spinach, and measure cheeses before assembly. If the dish is built ahead and refrigerated, cold-paned baking time and noodle hydration may change; test that schedule before promising an overnight assembly. Cool and refrigerate leftovers promptly, then reheat thoroughly. No specific freezer or storage-duration claim has been established for this recipe.

Questions before making the pan

Can I use regular lasagna noodles?

This method is measured for twelve oven-ready noodles and thinned marinara. Regular noodles may need boiling or a different liquid and baking plan. Follow their package and develop a separate tested card rather than swapping without adjustment.

Why roast the squash first?

It lets the cubes soften and gain browned edges before they are enclosed in sauce. Raw cubes might remain firm or release more moisture during the covered bake. The twenty-five-minute roast is part of the overall timeline.

Can I use fresh sage?

Fresh sage is already specified at one chopped tablespoon. Dried sage is more concentrated, so it should be tested at a measured amount rather than replaced volume for volume.

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Butternut Squash and Spinach Lasagna. Eight portions from a 9-by-13-inch dish. Prep approximately 30 minutes with spinach already thawed; roast squash 25 minutes; bake covered 45 minutes and uncovered 15 minutes; rest 20 minutes; total approximately 135 minutes, excluding preheat and spinach thaw. Not kitchen-tested; nutrition not calculated.

Ingredients: 4 cups peeled diced butternut squash; 2 tbsp olive oil; ½ tsp fine salt; ¼ tsp black pepper; 10 oz thawed squeezed frozen chopped spinach; 15 oz whole-milk ricotta; 1 tbsp chopped fresh sage; 24 oz jarred marinara; ½ cup water; 12 oven-ready lasagna noodles; 2 cups shredded low-moisture mozzarella; ½ cup finely grated Parmesan.

Instructions: Roast seasoned, oiled squash at 400°F about 25 minutes. Mix squeezed spinach, ricotta and sage; thin marinara with water. In 9-by-13-inch dish layer ¾ cup sauce, four noodles, half filling, half squash, ¾ cup sauce and ½ cup mozzarella; repeat. Top with four noodles, remaining roughly 1¼ cups sauce, 1 cup mozzarella and Parmesan. Cover tightly; bake at 400°F for 45 minutes, uncover for about 15 minutes until noodles tender and top bubbling. Rest 20 minutes and cut eight portions. Test sauce coverage, package and finished structure.

Butternut Squash and Spinach Lasagna

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• Author: Ethan Carter
• Total Time: 135 minutes
• Yield: 8 servings 1x

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Description

An eight-slice vegetarian 9-by-13-inch lasagna with roasted diced squash, spinach-ricotta, mozzarella and marinara.

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Ingredients

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• 4 cups Butternut squash, peeled, seeded and diced
• 2 tablespoons Olive oil
• 1/2 teaspoon Fine salt
• 1/4 teaspoon Black pepper
• 10 oz Frozen chopped spinach, thawed and squeezed dry
• 15 oz Whole-milk ricotta
• 1 tablespoon Fresh sage, finely chopped
• 24 oz Jarred marinara sauce
• 1/2 cup Water, to loosen marinara for oven-ready noodles
• 12 noodles Oven-ready lasagna noodles
• 2 cups Shredded low-moisture mozzarella
• 1/2 cup Finely grated Parmesan

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Instructions

1. Heat oven to 400°F. Toss 4 cups peeled diced butternut squash with 2 tbsp olive oil, 1/2 tsp salt and 1/4 tsp pepper. Spread on a rimmed sheet and roast about 25 minutes until tender with browned edges. Keep oven at 400°F.
2. Thaw and firmly squeeze 10 oz frozen chopped spinach. Mix with 15 oz ricotta and 1 tbsp chopped sage. Stir 1/2 cup water into one 24-oz jar marinara to give about 3 1/2 cups sauce; use actual jar yield and noodle package as a trial check.
3. In a 9-by-13-inch dish, spread about 3/4 cup thinned sauce. Add 4 oven-ready noodles, half the spinach-ricotta mixture, half the roasted squash, 3/4 cup sauce and 1/2 cup mozzarella. Repeat these noodle/filling/sauce/mozzarella layers once.
4. Finish with the remaining 4 noodles, about 1 1/4 cups remaining thinned sauce, 1 cup mozzarella and 1/2 cup grated Parmesan. Cover tightly with foil, tenting it away from cheese if possible. Bake 45 minutes; uncover and bake about 15 minutes more until bubbling and noodles tender.
5. Rest the pan 20 minutes before cutting eight portions. Record noodle tenderness, sauce coverage, squash moisture and actual slice structure in a kitchen trial.

Notes

Recipe-development draft; not kitchen-tested. Timing and yield are estimates. Nutrition has not been calculated.

Additional chilling, resting or cooling time: 20 minutes, included in the total.

Untested estimate: 25-minute squash roast, 60-minute covered/uncovered bake, 20-minute rest; use oven-ready noodle package directions and test moisture.

• Prep Time: 30 minutes
• Chilling, resting or cooling: 20 minutes
• Cook Time: 85 minutes

Nutrition

• Serving Size: One eighth of the baked 9-by-13-inch pan