Simple Vegetarian Skillet Lasagna.
Comfort food that’s quick enough for a weeknight, satisfying enough for guests, and bright enough to keep your meals feeling fresh — that’s what Simple Vegetarian Skillet Lasagna. delivers. Think all the cozy, melty goodness of lasagna, but built in one pan on the stovetop with layers of vegetables, lentils, sun-dried tomatoes, and tender no-boil noodles. It’s an easy assembly, minimal dishes, and a great way to use pantry staples and fresh herbs in the same dish.
Why you’ll love this recipe
This Simple Vegetarian Skillet Lasagna. is a win because it balances texture and flavor without fuss. Zucchini and mushrooms lend a gentle earthiness, pepper adds a sweet snap, and spinach and basil bring brightness. Creamy mozzarella and provolone melt into a luscious finish while a sprinkle of Parmesan and optional pesto on the side add the finishing touch. Lentils provide a boost of plant-based protein and body so the skillet feels hearty and complete.
Ingredients
Use the list below exactly as written for best results. The ingredient names and amounts are the source of truth for the directions that follow.
- ▢2 tablespoons olive oil
- ▢1 zucchini chopped
- ▢8 ounces button mushrooms finely chopped
- ▢1 red pepper seeded + chopped
- ▢2 cloves garlic minced or grated
- ▢1 jar roasted garlic or tomato basil pasta sauce
- ▢1 cup milk
- ▢pinch of crushed red pepper flakes
- ▢1/2 cup oil packed sun-dried tomatoes oil drained
- ▢1/2 cup rinsed green lentils
- ▢6 ounces no boil lasagna noodles
- ▢2 cups fresh spinach
- ▢1 cup fresh basil
- ▢8 ounces mozzarella sliced
- ▢4 ounces provolone shredded
- ▢1/3 cup grated parmesan plus more for topping
- ▢pesto, for serving (optional)
Prep notes
Before you start cooking, chop the zucchini, mushrooms, and red pepper so everything is ready to go. Rinse the lentils and drain the sun-dried tomatoes well so excess oil doesn’t pool in the skillet. Use a large, ovenproof skillet or a wide, heavy-bottomed sauté pan with a tight-fitting lid; this will help layers cook and cheeses melt evenly.
Step-by-step instructions
Follow these steps in order. Quantities match the ingredient list exactly.
- Heat the skillet: Place a large skillet over medium heat and add 2 tablespoons olive oil. Allow the oil to warm until it shimmers but does not smoke.
- Sauté the vegetables: Add 1 chopped zucchini, 8 ounces finely chopped button mushrooms, and 1 seeded and chopped red pepper to the hot oil. Cook, stirring occasionally, until the vegetables are just softened and beginning to brown, about 6–8 minutes.
- Add garlic and sun-dried tomatoes: Stir in 2 cloves minced or grated garlic and 1/2 cup oil packed sun-dried tomatoes (oil drained). Cook for 1–2 minutes until fragrant, stirring so the garlic does not burn.
- Add lentils and sauce: Pour in 1/2 cup rinsed green lentils and the jar of roasted garlic or tomato basil pasta sauce. Stir to combine, scraping any browned bits from the bottom of the pan.
- Add milk and seasonings: Add 1 cup milk and a pinch of crushed red pepper flakes. Stir well, then bring the mixture to a gentle simmer. Adjust the heat so the sauce simmers but does not boil vigorously.
- Layer noodles and greens: Break the 6 ounces no boil lasagna noodles to fit the skillet as needed and arrange them in a single layer over the saucy vegetable-lentil mixture. Scatter 2 cups fresh spinach and 1 cup fresh basil over the noodles so they begin to wilt into the sauce.
- Add cheese layers: Arrange slices from 8 ounces mozzarella over the noodles and shredded 4 ounces provolone evenly on top. Sprinkle 1/3 cup grated parmesan across the surface for savory depth.
- Cover and steam: Reduce heat to low, cover the skillet with a tight-fitting lid, and let everything steam for 10–12 minutes. This gives the no boil noodles time to soften and the cheeses time to melt.
- Finish and melt: After steaming, increase the heat to low-medium and cook uncovered for an additional 2–4 minutes if the top needs more melting or the sauce needs to thicken slightly. Keep an eye on the skillet to prevent sticking.
- Rest and serve: Remove the skillet from the heat and let the lasagna rest 5 minutes. This helps the layers settle and makes portions easier to serve. Spoon onto plates, top with extra grated parmesan and a drizzle of pesto if using, and enjoy hot.
Tips for success
- Use a wide skillet: A broad pan helps you layer noodles flat so they soften evenly.
- Drain sun-dried tomatoes: Keeping excess oil out of the skillet prevents the sauce from becoming greasy.
- Adjust milk for creaminess: If you prefer a richer sauce, use whole milk; a lower-fat milk will yield a lighter finish.
- Keep the lid on: The steam trapped under the lid is what cooks the no-boil noodles through, so resist the urge to lift it frequently.
- Add more greens: If you’re a spinach lover, increase to 3 cups — it wilts down significantly.
Make-ahead and storage
This skillet lasagna reheats beautifully. Cool completely, then transfer leftovers to an airtight container and refrigerate for up to 4 days. Reheat individual portions in the microwave for 1–2 minutes, or rewarm in a 350°F oven covered with foil for 15–20 minutes until heated through. You can also freeze portions for up to 3 months; thaw overnight in the refrigerator before reheating.
Variations and swaps
- Spicier: Increase the crushed red pepper flakes to 1/4 teaspoon or add a pinch of smoked paprika for warmth.
- Cheese-free: Swap the cheeses for a dairy-free shredded blend and nutritional yeast for a cheesy flavor.
- Protein boost: Add cooked chickpeas or extra lentils for a heartier dish, keeping the same lentil amount if you want to maintain balance.
- Vegetable swaps: Swap the zucchini for thinly sliced eggplant or add chopped carrots for natural sweetness.
Serving suggestions
Serve straight from the skillet with a simple green salad and crusty bread to sop up any extra sauce. A spoonful of pesto on each serving brightens the flavors, or finish with a generous sprinkle of extra grated parmesan for a salty, savory lift.
About this recipe
This Simple Vegetarian Skillet Lasagna. was written to be straightforward and forgiving while delivering the layered textures that make lasagna so beloved. The method keeps prep simple but still highlights fresh herbs and a combination of melting cheeses for that classic, comforting finish. It’s an approachable recipe for cooks of all levels and scales easily for more mouths — double the vegetables and use a larger pan to stretch it further.
Nutrition snapshot (approximate per serving)
Calories and macronutrients will vary depending on brand choices and portion sizes, but you can expect a balanced meal with vegetables, legumes for protein, and moderate cheese for fat and flavor. Pair it with a light salad to round out the plate.
Final notes
Make this Simple Vegetarian Skillet Lasagna. when you need a satisfying, vegetable-forward meal that’s cozy and uncomplicated. The one-pan approach keeps cleanup easy and lets you enjoy lasagna without the oven fuss — perfect for busy weeknights or relaxed weekend dinners when you want comfort food without the commitment of layered baking.
Simple Vegetarian Skillet Lasagna.
Ingredients
Equipment
Method
- Preheat the oven to 375°F (190°C).
- Heat a large high-sided skillet or Dutch oven over medium heat and add the olive oil.
- Add the chopped zucchini, finely chopped mushrooms and chopped red pepper; season with salt and pepper and cook about 3 minutes until lightly caramelized.
- Add the minced garlic and cook 1 minute more until fragrant.
- Stir in the pasta sauce, milk and a pinch of crushed red pepper flakes, then mix in the drained sun-dried tomatoes and rinsed lentils with 1/4 cup water.
- Break each no-boil lasagna noodle into 2–3 pieces and stir into the sauce, pushing pieces so most are submerged.
- Simmer, stirring occasionally, until the noodles are al dente and the lentils are tender, about 15 minutes; add more water a tablespoon at a time if the mixture becomes too thick.
- Stir in the fresh spinach and basil until wilted and evenly distributed.
- Remove the skillet from heat and evenly top with sliced mozzarella, shredded provolone and grated Parmesan.
- Place the skillet on a baking sheet and bake in the preheated oven 10 minutes, until the cheese is melted and bubbly.
- Let the skillet rest 5 minutes, then serve with optional pesto and extra Parmesan.
Notes
- Use no-boil noodles to avoid pre-cooking pasta.
- Drain oil from sun-dried tomatoes to avoid an overly greasy sauce.
- Add water gradually if the skillet becomes too thick while simmering.
- Slice or shred cheeses uniformly for even melting.
