Homemade Yellow Squash Lasagna swaps pasta for golden squash slices, creating a lighter, veggie-forward comfort dish.
This recipe layers thin squash with ricotta brightened by lemon zest and fresh basil, wilted spinach, marinara, and melted mozzarella. The result is a dish that holds together beautifully, slices cleanly, and brings a golden-brown cheesy crust that looks as good as it tastes. It’s a make-ahead-friendly option that works well for family dinners or gatherings where you want something satisfying without the heaviness of noodles.
The key to success here is managing moisture—salting the squash, squeezing the spinach dry, and letting the finished lasagna rest before slicing all contribute to layers that stay intact instead of turning soupy. The lemon zest in the ricotta adds a subtle lift that keeps the dish from feeling one-note, while the combination of parmesan, garlic powder, and red pepper flakes gives the filling depth and warmth.
What Goes Into Homemade Yellow Squash Lasagna
This lasagna relies on a handful of fresh ingredients and pantry staples that come together into something much greater than the sum of their parts.
- Yellow squash – sliced thin and salted to release moisture, forming the tender vegetable layers that replace pasta.
- Whole milk ricotta – provides the creamy, rich base for the cheese filling.
- Parmesan cheese – adds sharpness and depth to the ricotta mixture.
- Fresh basil – ribboned finely to bring herbal brightness throughout the filling.
- Garlic powder – delivers savory backbone without the risk of raw garlic bitterness.
- Red pepper flakes – contribute gentle heat that warms the dish without overwhelming it.
- Egg – binds the ricotta mixture so it holds together during baking.
- Fresh lemon zest – brightens the ricotta with a subtle citrus lift that balances the richness.
- Baby spinach – wilted and squeezed dry to add color, nutrients, and earthy flavor without introducing excess water.
- Marinara sauce – provides the tangy tomato layer that ties everything together.
- Shredded mozzarella – melts into gooey, golden perfection across the top and between layers.
- Dried parsley – finishes the dish with a touch of color and mild herb flavor.
Step-by-Step: Building Your Yellow Squash Lasagna
STEP 1: Slice the yellow squash into 1/8-inch thick rounds using a mandoline or sharp knife. Arrange the slices between paper towels, sprinkle lightly with salt, and let sit for 15 minutes to draw out moisture. Preheat your oven to 375°F while the squash drains.
STEP 2: In a large bowl, combine the ricotta, parmesan, fresh basil, garlic powder, red pepper flakes, salt, black pepper, egg, and lemon zest. Stir until smooth and well blended.
STEP 3: Microwave the fresh spinach with a splash of water for 3 minutes until wilted, then squeeze it very dry in a clean kitchen towel to remove all excess liquid. This step is critical for preventing a watery lasagna.
STEP 4: Spread about 1/3 cup of marinara sauce on the bottom of a 9×13 inch baking dish. Layer one-third of the squash slices, then spread half of the ricotta mixture, followed by half of the wilted spinach. Drizzle with more sauce and sprinkle with one-third of the mozzarella.
STEP 5: Repeat with another layer of squash, the remaining ricotta, the remaining spinach, more sauce, and another third of the mozzarella. Finish with the final squash layer, the remaining sauce, and the last of the mozzarella on top.
STEP 6: Cover the lasagna with foil and bake for 30 minutes at 375°F. Remove the foil and bake uncovered for an additional 15 to 20 minutes until the top is golden brown and the cheese is bubbling at the edges.
STEP 7: Remove from the oven and let rest for 15 minutes before slicing. This resting time allows the layers to set so each slice holds together cleanly.
What to Serve With Yellow Squash Lasagna
This lasagna pairs well with sides that complement its rich, savory profile without adding too much heaviness. A simple arugula salad with lemon vinaigrette cuts through the richness and adds peppery brightness. Garlic bread or a crusty baguette works well for soaking up extra marinara and balancing the vegetable-forward layers. Roasted broccoli or green beans with olive oil and garlic round out the meal with another vegetable element.
Squash Lasagna Success: Tips for Picture-Perfect Layers
- Use a mandoline slicer – Cut the squash into uniform 1/8-inch slices to ensure even baking and prevent mushy or undercooked layers.
- Salt and drain the squash – Let slices sit for 15 minutes between paper towels to release moisture and prevent a watery lasagna.
- Squeeze the spinach dry – Roll wilted spinach tightly in a clean kitchen towel and twist hard to remove all excess liquid.
- Let the lasagna rest – Wait the full 15 minutes after baking before slicing so layers set and hold together cleanly.
Yellow Squash Lasagna FAQs: Substitutions, Prep, and More
Can I substitute zucchini for yellow squash in this lasagna?
Yes, zucchini works just as well as yellow squash in this recipe. Slice it to the same 1/8-inch thickness, salt it to draw out moisture, and follow the same layering steps. The flavor will be slightly milder, but the texture and structure will be nearly identical.
How do I keep the squash from making the lasagna watery?
Salt the squash slices and let them sit for 15 minutes between paper towels to release moisture. Pat them dry before layering. Also, make sure to squeeze the spinach very dry after wilting. These two steps prevent excess water from pooling in the lasagna during baking.
Is it possible to make this lasagna ahead of time?
Yes, you can assemble the lasagna up to 24 hours in advance, cover it tightly with foil, and refrigerate. When ready to bake, add 10 to 15 minutes to the covered baking time since the dish will be cold from the fridge. Let it rest before slicing as usual.
Can I make this recipe gluten-free?
This lasagna is naturally gluten-free as long as your marinara sauce and other ingredients don’t contain hidden gluten. Check labels on store-bought marinara and shredded cheese to be sure. The squash replaces pasta entirely, so there’s no need for gluten-free noodles.
What’s the best way to cut the squash evenly?
A mandoline slicer set to 1/8 inch is the fastest and most consistent method. If you don’t have one, use a sharp chef’s knife and cut slowly, keeping your slices as uniform as possible. Even thickness ensures the squash cooks evenly and the layers hold together well.
Storing and Reheating Homemade Squash Lasagna
Store leftover lasagna in an airtight container in the fridge for up to 4 days. Reheat individual slices in the microwave for 1 to 2 minutes, or warm larger portions in a 350°F oven for 15 to 20 minutes until heated through. Cover with foil to prevent the cheese from drying out.
You can also freeze assembled but unbaked lasagna for up to 2 months. Wrap it tightly in plastic wrap and foil, then thaw overnight in the fridge before baking as directed. Baked lasagna can be frozen as well, though the squash texture may soften slightly upon reheating.
Homemade Yellow Squash Lasagna
Ingredients
Equipment
Method
- Using a mandoline slicer or sharp knife, cut the yellow squash into 1/8-inch thick rounds. Lay the slices out between layers of paper towels, sprinkle lightly with salt, and allow them to rest for 15 minutes — this draws out excess moisture and helps prevent a watery lasagna. While the squash drains, preheat your oven to 375°F.
- In a large bowl, mix together the ricotta, parmesan, fresh basil, garlic powder, red pepper flakes, salt, black pepper, egg, and lemon zest. Stir until the mixture is smooth and evenly combined. In a separate microwave-safe bowl, microwave the fresh spinach with a splash of water for 3 minutes until fully wilted, then transfer it to a clean kitchen towel and squeeze out as much liquid as possible — thoroughly dry spinach is key to keeping the layers from becoming soggy.
- Spread about 1/3 cup of marinara sauce in an even layer across the bottom of a 9x13 inch baking dish. Arrange one-third of the salted squash slices on top, then spread half of the ricotta mixture evenly over the squash, followed by half of the wilted spinach. Add another drizzle of marinara sauce and sprinkle with one-third of the shredded mozzarella.
- Build a second layer starting with another third of the squash slices, followed by the remaining ricotta mixture, the remaining spinach, more marinara sauce, and another third of the mozzarella. Finish the lasagna with the final layer of squash slices, the remaining marinara sauce spread evenly on top, and the last of the mozzarella sprinkled over everything.
- Cover the baking dish tightly with aluminum foil and bake at 375°F for 30 minutes. Remove the foil and continue baking uncovered for an additional 15 to 20 minutes, until the top is golden brown and the cheese is bubbling at the edges.
- Take the lasagna out of the oven and let it rest, uncovered, for 15 minutes before slicing. This resting time allows the layers to firm up so each portion holds its shape when served. Sprinkle with dried parsley before serving.
