Why You’ll Love This Recipe

I enjoy this lasagna because it highlights the classic pairing of savory sausage and broccoli rabe in a richer, heartier form. I like how the mornay sauce ties everything together with smooth, cheesy flavor, and the oven-ready noodles make assembly wonderfully simple. It’s a cozy, impressive dish that always satisfies.

Ingredients

(Note: All ingredient amounts are listed in the recipe card below.)

For broccoli rabe:
1 lb. broccoli rabe, ends trimmed
Kosher salt
1 tsp. lemon zest
Freshly ground black pepper
Crushed red pepper flakes

For sausage:
1 lb. ground meat
1 1/2 tsp. coarsely ground fennel seeds
2 garlic cloves, grated
2 tsp. brown sugar
2 tsp. vinegar
1/2 tsp. smoked paprika
1/2 tsp. crushed red pepper flakes
1 Tbsp. extra-virgin olive oil, plus more for baking dish

For mornay:
4 Tbsp. butter
1/4 cup all-purpose flour
2 1/2 cups whole milk
1/4 tsp. freshly grated nutmeg (optional)
1 cup freshly grated Parmesan, plus more

For lasagna:
8 oven-ready lasagna noodles

Directions

1. To blanch the broccoli rabe, I prepare an ice bath. I cook the broccoli rabe in salted boiling water for 1 minute until bright green, then transfer it to the ice bath. I squeeze out the excess water, roughly chop it, and toss it with lemon zest, salt, pepper, and red pepper flakes.

2. To prepare the sausage mixture, I combine the fennel, garlic, brown sugar, vinegar, paprika, and crushed red pepper in a bowl. I add the ground meat and mix with my hands until everything is evenly blended.

3. I heat olive oil in a large skillet over medium-high heat, add the meat mixture, and break it into small pieces as it cooks. I stir occasionally until golden and fully cooked, about 8 to 10 minutes. I season to taste and set aside. I preheat the oven to 375 degrees F.

4. To make the mornay sauce, I melt the butter in a saucepan over medium heat. I whisk in the flour and cook until it turns slightly darker and smells nutty, about 2 to 3 minutes. I slowly pour in the milk while whisking constantly to prevent lumps. I bring it to a simmer, stirring until thickened. I season with salt and nutmeg, then stir in the Parmesan until melted.

5. To assemble the lasagna, I grease an 8×8-inch baking dish with olive oil. I spread 1/4 cup mornay on the bottom and top with two noodles. I spread 1/2 cup mornay over the noodles, then add one-third of the meat and one-third of the broccoli rabe. I repeat the layering twice more, alternating noodle direction each time. I finish with the last two noodles, the remaining mornay, and a light layer of Parmesan.

6. I bake for 30 to 35 minutes until the top is golden and the noodles are tender. I let the lasagna rest for 10 minutes before slicing.

Servings and Timing

This recipe makes 4–6 servings.
Prep time: 55 minutes
Total time: 1 hour 35 minutes

Variations

I sometimes mix spinach with the broccoli rabe for a slightly milder green. When I want a cheesier version, I add a thin layer of ricotta between the noodles. I also enjoy adding a handful of mozzarella to the top for extra browning and melt.

Storage/Reheating

I store leftovers in the refrigerator for up to 4 days. I reheat slices in a 350-degree oven or the microwave until warmed through. The lasagna freezes well for up to 2 months when wrapped tightly; I thaw it overnight before reheating.

FAQs

Can I use another type of green instead of broccoli rabe?

Yes, I use spinach or broccoli florets for a milder flavor.

Can I use pre-made sausage?

Yes, I simply crumble and cook it the same way.

Do I need to blanch the broccoli rabe?

Yes, blanching helps reduce bitterness and ensures it cooks evenly.

Can I use no-boil noodles?

Yes, oven-ready noodles work perfectly in this recipe.

Can I make the lasagna ahead of time?

Yes, I assemble it up to a day in advance and refrigerate until baking.

Can I add other cheeses?

Yes, mozzarella, provolone, or ricotta make it even richer.

Can I double the recipe?

Yes, I use a 9×13 pan and extend baking time slightly if needed.

What if my mornay sauce is too thick?

I whisk in a splash of milk until smooth.

Can I freeze the lasagna before baking?

Yes, I freeze it fully assembled and bake from frozen, adding extra time.

Can I use a different vinegar?

Yes, any mild vinegar works well.

Conclusion

I love how this broccoli rabe and sausage lasagna layers hearty greens, richly seasoned meat, and creamy Parmesan sauce into a comforting meal. It’s a warm, flavorful dish that feels special enough for guests yet simple enough for a cozy weeknight dinner.