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–+ servings
Melany

Easy Vegetarian Lasagna with Spinach

Rich, cheesy, and packed with nutrient-dense spinach, this Easy Vegetarian Lasagna with Spinach is a comforting dish perfect for weeknights, meal prep, or family dinners. It’s a hearty, flavorful classic that everyone will love!
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings: 8 servings
Course: Main Dish
Cuisine: Italian
Ingredients Method Notes

Ingredients
  

Cheese Filling:
  • 15 oz 2 cups ricotta cheese
  • 1 large egg
  • 2 cups mozzarella cheese
  • ¾ cup freshly grated Parmesan cheese
  • 2 teaspoons Italian seasoning
  • ½ teaspoon salt
  • ¼ teaspoon pepper
Vegetarian Sauce:
  • 1 tablespoon olive oil
  • 1 yellow onion finely diced
  • 3 cloves garlic minced
  • 40 oz about 5 cups marinara sauce
  • 1 tablespoon tomato paste
  • 3 cups fresh spinach
Lasagna Noodles and Topping:
  • 12 lasagna noodles
  • 2.5 cups shredded mozzarella cheese
  • Fresh parsley chopped, for garnish

Method
 

Prepare the Cheese Filling:
  1. In a medium bowl, mix ricotta cheese, egg, mozzarella cheese, Parmesan cheese, Italian seasoning, salt, and pepper until well combined. Set aside.
2. Make the Sauce:
  1. Heat olive oil in a large skillet over medium heat.
  2. Sauté the diced onion for 5-7 minutes until softened.
  3. Add garlic and cook for 1 minute until fragrant.
  4. Stir in marinara sauce, tomato paste, and fresh spinach. Cook until the spinach wilts and the sauce is heated through.
3. Cook the Lasagna Noodles:
  1. Bring a large pot of salted water to a boil.
  2. Cook lasagna noodles to al dente according to package instructions.
  3. Drain and rinse with cold water, then lay flat on wax paper to prevent sticking.
4. Assemble the Lasagna:
  1. Preheat your oven to 375°F (190°C).
  2. Spread a heaping cup of sauce in the bottom of a 9 x 13-inch casserole dish.
  3. Lay down 4 lasagna noodles, slightly overlapping if needed.
  4. Spread 1/3 of the cheese mixture over the noodles.
  5. Add 1½ cups of sauce over the cheese layer.
  6. Repeat these layers two more times, finishing with a layer of sauce.
  7. Top with the remaining mozzarella cheese.
5. Bake the Lasagna:
  1. Cover the dish with aluminum foil sprayed with nonstick cooking spray to prevent sticking.
  2. Bake for 35 minutes, then remove the foil and bake for an additional 10 minutes until the cheese is golden and bubbly.
6. Rest and Serve:
  1. Let the lasagna rest for 15 minutes to set the layers.
  2. Garnish with chopped parsley and serve warm.

Notes

  • Use fresh spinach for vibrant flavor, or substitute with frozen spinach (thawed and squeezed dry).
  • Grate your cheese for the best melt and flavor.
  • Make ahead and refrigerate overnight for an easy bake the next day.

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