The pressure builds and you start counting down minutes until you eat. That little bit of time where you sneak glances at your pressure cooker, hearing it do its thing. It's kinda funny how your stomach gets louder with every tick of the timer, huh?

You spot the steam starting to hiss out and that means you're closer to diving into your lasagna. The kitchen fills with the smell of garlic, herbs, and roasted pumpkin. It's enough to make you drool before you even plate it.
By natural release or quick release, you know this lasagna's gonna be soft, tasty, and totally worth the wait. Also gotta say, it's not just lasagna, it's a whole homey vibe you're making with layers of veggies and cozy cheese.
The Real Reasons You Will Love This Method
- This pressure cooker way speeds up cooking without losing that rich broth depth you expect in lasagna.
- No fuss with boiling noodles first since fresh lasagna sheets soften perfectly under pressure.
- You can layer veggies and ricotta easy-peasy and it all steams together, locking in flavor.
- The slow release lets flavors mingle gently, so the sauce tastes way better than just quick thrown together.
- It's a one-pot delight so less dishes to clean and more time enjoying your meal.
- No need to babysit the oven the whole time, giving you a break while dinner cooks.
Everything You Need Lined Up
- 500 g pumpkin in 2cm cubes gives a nice sweet touch
- 2 large zucchinis chunked good for roasting
- 2 onions, wedges your choice between brown or white
- Olive oil for roasting veggies and sautéing the sauce
- Garlic cloves minced fresh for that punch of flavor
- Frozen chopped spinach, thawed and pressed dry to keep things from soggy
- Ricotta cheese, 500 g to mix creamy goodness with parmesan and egg
- Lasagne sheets fresh, so they cook perfectly in the pressure cooker time
Don't forget those extras like tomato passata, crushed tomato, spices like thyme and oregano, a little chili flakes for heat, salt, pepper, mozzarella cheese. They all work together to make your layers sing with flavor.
Walking Through Every Single Move
Start by preheating your oven to 200°C fan, or 220°C if it ain't fan setting. Toss pumpkin, zucchinis, and onion on a tray with olive oil and garlic minced. Sprinkle salt and pepper then roast these veggies 'til they're brown and soft, about 25 minutes.

While veggies roast, squeeze out any extra moisture from your spinach with a tea towel - nobody likes watery cheese mix.
Mix ricotta, parmesan, egg, spinach, a little salt and pepper in a bowl. This is your creamy layer that makes this dish special. Set that aside.
In a pressure cooker safe dish layer starts with a thin spread of ricotta mix, then a single layer of lasagna sheets. Follow by spreading more ricotta, then pone of those yummy roasted veggies, then lasagna again. Keep layering until you finish, top with that ricotta mix and heaps of shredded mozzarella.
Pop this whole thing into your pressure cooker. Lock the lid and bring it to pressure. Cook it for about 25 minutes with slow release so flavors meld good.
For finishing, you can pop it in the oven just for a few minutes if you want a golden top or let it be all soft and cozy right from the cooker after natural release. Either way it's a winner.
Let it rest at least 10 minutes after cooking. This helps your layers firm up and makes it easier to serve without a mess.
Easy Tweaks That Make Life Simple
- If you're short on time, you can skip roasting veggies and toss them raw in layers. Just add a few extra mins to pressure cooking.
- Use store-bought jar red pepper strips instead of roasting your own to save prep time.
- Swap out ricotta for cottage cheese if that's what you got on hand. The texture's different but still tasty.
- Make it vegan by using plant-based cheese and skipping the egg in the ricotta mix. Just add some flaxseed mix for binding.
The Flavor Experience Waiting for You
When you get that first bite, you notice the sweetness from the roasted pumpkin mixing with the earthy zucchini. It's a combo that feels fresh yet comforting.
The ricotta layer is rich and creamy, with just enough salt and a hint of nutmeg to keep your taste buds curious. That creamy blend melts right into the pillows of pasta.
Tomato sauce sneaks in with herbs and just a touch of chili flakes that give you a tiny kick but don't overpower. Overall, it's like a warm hug on a plate that keeps you going back for more.
How to Store This for Later
Leftovers can stay tasty if you cover them and pop in the fridge. They'll last a good 3 to 4 days so you can enjoy again soon.
For longer storage, portion out into airtight containers and freeze. It works well frozen and you can thaw in fridge overnight before reheating.
Reheat by microwaving covered or in a small oven-safe dish. If in the oven, cover loosely with foil and warm at around 180°C till bubbling hot.
What People Always Ask Me
- Can I use regular dry lasagna noodles? Nah, dry noodles usually need boiling first. Fresh ones work best for pressure cooker to avoid gummy mess.
- How do I know when pressure is ready? Your cooker will beep or show a light. You'll also spot steam from the valve when it hits pressure build.
- Should I do natural release or quick release? Natural release slow lets flavors meld more, but quick release works if you're in a hurry.
- Can I add other veggies? Heck yes. Mushrooms, bell peppers, eggplant all fit right in.
- Do I have to pre-roast the vegetables? Roasting brings out sweetness but you can skip it if you want faster. Just adjust cooking times.
- Why does my lasagna get watery sometimes? Squeezing spinach well and not overloading sauce with water helps. Also letting it rest before serving is key.

To explore more tasty and easy peace-of-mind recipes, check out our Slow Cooker Garlic Butter Beef Bites & Potatoes and cozy Quick Bok Choy with Ginger Chili Sauce, both perfect for fuss-free cooking days.
Need more one-pot ideas? Browse our collection of Dinner Recipes to find meals that save time and clean-up.

Vegetarian LasagnaNagi in the Pressure Cooker
Equipment
- 1 Mixing bowl for ricotta and spinach
- 1 Baking dish pressure-cooker safe
- 1 Oven for optional browning
Ingredients
Main ingredients
- 500 g Pumpkin diced into 2cm cubes
- 2 Zucchinis cut into chunks
- 2 Onions cut into wedges
- 2 tablespoon Olive oil for roasting
- 1 clove Garlic minced
- Salt and pepper
- 250 g Frozen chopped spinach thawed and pressed dry
- 500 g Ricotta cheese
- ½ cup Grated parmesan or shredded cheese
- 1 Egg
- 1 clove Garlic minced
- ⅛ teaspoon Nutmeg optional, grated
- ½ teaspoon Salt and pepper
- 1 tablespoon Olive oil
- 1 clove Garlic
- 1 Small onion finely chopped
- 700 g Tomato passata
- 400 g Crushed tomato
- ½ cup Water
- ¾ teaspoon Dried thyme and oregano or basil, parsley
- ½ teaspoon Chili flakes optional
- Salt and pepper to taste
- 330 g Roasted red pepper strips drained
- 375 g Fresh lasagne sheets
- 300 g Shredded mozzarella or more to taste
Instructions
Instructions
- Preheat oven to 200°C. Toss pumpkin, zucchinis, and onion with olive oil and minced garlic. Add salt and pepper. Roast for 25 minutes until browned and soft.
- Squeeze excess moisture from spinach using a towel.
- In a bowl, mix ricotta, parmesan, egg, spinach, salt, and pepper. Set aside.
- Layer in a pressure-cooker-safe dish: sauce, lasagna sheets, ricotta mix, roasted veggies, repeating. End with ricotta and mozzarella.
- Lock lid and cook in pressure cooker for 25 minutes. Allow natural or slow release.
- Optional: Broil in oven after for golden top.
- Let lasagna rest for at least 10 minutes before serving.


