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THE COOKING NOTEBOOK · Pasta

Beef and spinach lasagna: control moisture before building the layers

Three pasta layers separate a tomato-beef sauce and a soft spinach-ricotta center beneath browned mozzarella.

THE COMPLETE FREE RECIPE

Beef & spinach layered lasagna

Three pasta layers separate a tomato-beef sauce and a soft spinach-ricotta center beneath browned mozzarella.

2 hr 5 minEstimated total time8 equal squaresYield
Three pasta layers separate a tomato-beef sauce and a soft spinach-ricotta center beneath browned mozzarella.
Read the walkthrough

Ingredients

Volumes are approximate. For baking, use a scale; Metric keeps the specified gram weights.

Instructions

  1. Heat oil in a saucepan over medium heat. Cook onion 6-8 minutes. Add beef and break into small crumbles; cook until it reaches 160°F (71°C), retaining rendered fat. Add garlic and oregano for 30 seconds, then tomatoes, measured water, salt and pepper. Simmer uncovered 15 minutes until thick but spreadable.
  2. Meanwhile boil lasagna sheets in unsalted water following their package, stopping when pliable but still firm. Drain and lay separately on a clean tray. Wilt spinach in a separate covered saucepan with the water clinging to its washed leaves, then uncover and evaporate excess liquid. Cool 5 minutes and stir into ricotta.
  3. Heat oven to 375°F (190°C). Spread one-quarter of meat sauce in a 9-by-13-inch (23-by-33 cm), 3-quart (2.8 L) baking dish. Add one-third of pasta, trimming to fit. Add one-quarter of sauce, another third of pasta, all spinach-ricotta mixture, then remaining pasta. Cover with remaining meat sauce and mozzarella.
  4. Cover loosely with foil without pressing it onto cheese. Bake 30 minutes, uncover and bake 10-15 minutes more until center reaches 165°F (74°C) and cheese is lightly browned. Rest 20 minutes before cutting eight equal squares. Refrigerate leftovers in shallow containers within 2 hours, use within 3-4 days and reheat to 165°F (74°C).

Estimated nutrition

Per serving · 1 of 8
Calories
370 kcal
Protein
23.3 g
Total carbohydrate
34.8 g
Total fat
15.7 g
Total sugars
5.5 g

Calculated from the listed ingredients and yield. Brands, draining, cooking and portioning can change the result. Not a laboratory analysis.

Calculation notes & sources

ESTIMATED per serving. Brand, crop, preparation, draining, pan residue and substitutions change actual nutrition. Not laboratory analysis. Each ingredient retains its primary food description and state. All listed ingredient masses are counted; cooking moisture changes do not change the stated portion count. No generic nutrient-retention factor is invented. Calories are kcal; protein, total carbohydrate, fat and total sugar are grams. Total carbohydrate includes fiber and is not net carbohydrate. Fiber and sodium are not displayed. Equal portions or explicitly counted items define the stated recipe yield. US/Metric display changes do not change these canonical inputs. Primary-source supplements are retained per ingredient where USDA lacks a field; missing values are never silently changed to zero. Dry enriched wheat pasta represents ordinary boil-first lasagna sheets. Pasta cooking water is drained; all dry pasta nutrients are counted, with unmeasured leaching losses not subtracted. Raw 90%-lean beef is browned without draining; all rendered fat, sauce and measured oil remain in the assembled dish. Spinach is wilted until excess liquid evaporates, not squeezed and drained. Whole-milk ricotta and whole-milk mozzarella profiles match the named cheeses; brands and cheese moisture vary. Yield is eight equal portions, not a measured finished serving weight.

View the ingredient calculations · Source 1

Times and nutrition are estimates. Check product labels, quantities and safe cooking. US measures are approximate; exact Metric amounts remain available.

By Recipe Pinboard · October 17, 2026 · 4 min read

A lasagna that cuts into recognizable layers starts before the baking dish is filled. The meat sauce needs body, the spinach must shed excess surface water, and the pasta should bend without becoming fragile. The complete recipe card uses three pasta layers with a distinct spinach-ricotta center. Read the assembly sequence before starting so the sauce and sheets can be divided deliberately, leaving enough moisture to cover the final pasta layer.

The recipe at a glance

Beef & spinach layered lasagna makes 8 servings, with 2 hr 5 min estimated total time. View the standalone recipe page.

Make a sauce that spreads without flooding

Break the ground beef into small crumbles as it cooks with the softened onion. This helps distribute meat evenly across the thin layers and avoids large lumps that push pasta sheets upward. The recipe uses ninety-percent-lean beef and retains its rendered fat in the sauce. Add tomatoes and the measured water, then simmer until the mixture is thick but spreadable. A spoon drawn across the pan should leave a brief trail. Do not reduce it to a dry paste, because the noodles still need moisture during baking.

Match the pasta to the stated method

Choose ordinary dry lasagna sheets that require boiling. Oven-ready sheets are formulated for another hydration method and should not be substituted without changing the sauce and cooking plan. Boil the listed dry weight until the sheets are pliable but still firm, following the package as a starting guide. Lift or drain carefully and lay them separately on a clean tray so they do not weld into a stack. Trim or overlap minimally to fit the pan, using all the measured pasta rather than discarding large pieces.

Let spinach moisture evaporate

Wilt the washed spinach with the water clinging to its leaves, then uncover the pan and allow visible liquid to evaporate. This recipe does not squeeze and discard a substantial amount of spinach liquid; that distinction is retained in the nutrient assumptions. Cool the spinach briefly before mixing it into whole-milk ricotta. The result should be spoonable rather than runny. Large wet leaves can slide between the layers, so chopping before wilting helps distribute small pieces evenly through the cheese.

Build the three layers in the written order

Spread the first portion of meat sauce across the bottom of the specified dish to prevent dry pasta contact with the pan. Arrange the sheets, sauce and ricotta mixture exactly as listed, reserving the final sauce portion to cover the upper pasta completely. Spread fillings toward the corners instead of piling them in the middle. Finish with mozzarella and cover loosely with foil. The cover should trap heat without being pressed onto the cheese, which would pull away with the foil when uncovered.

Bake through and give the slice time to settle

The uncovered stage browns the mozzarella, but a browned top alone does not establish a hot center. Check that the middle reaches 165°F (74°C) before removing the dish. Then allow the full twenty-minute rest. During that time the sauce and cheese settle enough to make cutting less messy. Divide into eight equal squares with a sharp knife and lift with a broad spatula. Refrigerate remaining portions in shallow containers within two hours; do not leave the whole pan on the counter waiting for it to become completely cold.

Common questions

Why does the lasagna spread out when I serve it?

Very thin sauce, watery spinach or skipping the resting time can each make the layers slide. Check those stages before adding more cheese as a repair. The slice will still be soft and moist; the goal is a coherent portion rather than a rigid block.

Does the estimate subtract nutrients lost in pasta water?

No. It starts with the dry pasta amount and does not invent a retention factor for boiling and draining. That limitation is retained with the ingredient calculation. Brand, cheese moisture and the amount left on utensils can also affect the actual serving.

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