👩🍳 Instructions
-
1
Preheat oven to 375°F (190°C).
-
2
Heat olive oil in a large skillet over medium heat. Add chopped onion and sauté for 5-7 minutes until translucent. Add minced garlic and cook for 1 minute more until fragrant.
-
3
Stir in diced bell peppers and sliced zucchini. Cook for 8-10 minutes, stirring occasionally, until vegetables are tender-crisp. Add fresh spinach and cook until completely wilted, 2-3 minutes.
-
4
Season vegetables with Italian seasoning, 1/2 tsp salt, and 1/4 tsp black pepper. Stir in crushed tomatoes and tomato sauce. Bring to a gentle simmer, then reduce heat to low, cover, and cook for 15 minutes to allow flavors to meld.
-
5
While sauce simmers, prepare the cheese mixture: In a medium bowl, combine ricotta cheese, egg, 1/2 cup Parmesan, chopped parsley, 1/2 tsp salt, and 1/4 tsp black pepper. Mix until well combined.
-
6
To assemble: Spread about 1/2 cup of the veggie tomato sauce on the bottom of a 9x13 inch baking dish. Lay 3-4 no-boil lasagna noodles over the sauce, breaking if needed to fit.
-
7
Spread half of the ricotta cheese mixture evenly over the noodles. Sprinkle with 1/3 of the shredded mozzarella cheese. Spoon about 1.5-2 cups of the veggie tomato sauce over the mozzarella.
-
8
Repeat the noodle, ricotta, mozzarella, and sauce layers once more.
-
9
For the top layer: place the final 3-4 noodles, pour the remaining veggie tomato sauce over them, and sprinkle generously with the remaining mozzarella cheese and extra Parmesan.
-
10
Slowly pour the 1/2 cup of milk around the edges of the baking dish. This helps the no-boil noodles cook thoroughly.
-
11
Cover the baking dish loosely with aluminum foil. Bake for 30 minutes. Remove foil and bake for another 15-20 minutes, or until cheese is bubbly and golden brown.
-
12
Let the lasagna casserole rest for 10-15 minutes before slicing and serving. This allows the layers to set and makes for easier, cleaner cutting.
💡 Notes
For a bit of heat, add a pinch of red pepper flakes to the ricotta mixture. This casserole can be assembled up to 24 hours in advance and refrigerated before baking. Leftovers store well in the fridge for 3-4 days and can be frozen for up to 3 months.
🥗 Nutrition (per serving)
Calories
410 kcal
Protein
21g
Total Fat
18g
Saturated Fat
9g
Carbs
42g
Fiber
5g
Sugar
8g
Sodium
780mg
Cholesterol
45mg