Broccoli and Blue Cheese Lasagna

Vegetarian Entree | February 24, 2019 | By

Broccoli and Blue Cheese Lasagna

Warming, rich, and meat-free. This casserole is anything but low on flavor!
Prep Time 1 hour 15 minutes
Cook Time 35 minutes
Total Time 1 hour 50 minutes
Servings: 10

Ingredients

  • 1.5 pounds broccoli
  • 2 tablespoons extra virgin olive oil
  • 1 tablespoon garlic powder
  • 1 large yellow onion or 2 small yellow onions
  • 4 tablespoons butter, split into 1 Tb and 3 Tb
  • 1/4 cup all purpose flour
  • 2 cups whole milk
  • 1 tablespoon thyme
  • 8 ounces Gorgonzola, blue cheese, or other strong cheese
  • 2 cups ricotta
  • 2 eggs
  • 1 tablespoon fresh cracked black pepper
  • 1 box lasagna pasta sheets
  • 2 teaspoons salt, more to taste
  • 1 cup grated Parmesan or other melting cheese to top

Instructions

  • Heat oven to 435F and line a large sheet pan with parchment paper. Rinse and chop broccoli into large bite size pieces. Pile the broccoli on the lined sheet pan, drizzle the olive oil over, and sprinkle with the garlic powder. Massage briefly to distribute oil and garlic powder. Place in the top third of the oven.
  • While the broccoli is roasting, dice your onion. Melt 1 tablespoon of butter in a medium sauce pot. Over medium heat, stirring often, cook onions until translucent and well browned without burning. Scrape out onion into a medium mixing bowl and set aside.
  • Put a large pot of salted water on to boil for your lasagna noodles. Check broccoli, once dark brown in places, remove from the oven on a trivet to cool to handle.
  • In the pot you cooked the onion, melt the remaining 3 tablespoons of butter on medium-low heat and sprinkle in the flour and thyme. Whisk for a few minutes to cook the flour and warm the two cups of milk in the microwave (a minute to a minute and a half).
  • Turn the flour and butter mix heat down to low, pour in a scant two tablespoons milk (eyeball, measurement not necessary) and whisk vigorously. The flour paste will almost immediately absorb the milk and thicken. Pour in two more tablespoons, whisk vigorously. Keep repeating with small amounts of milk, making sure to clear any clumps from the center of your whisk until the milk isn't immediately absorbed. Increase to about half a cup of milk, whisking in between, until all milk has been added. The bechamel will be thin, this is good!
  • Crumble in the blue cheese and whisk to make your blue cheese bechamel. Set aside 3/4 cup of the blue cheese bechamel for final topping of the lasagna.
  • Take the cooled, roasted broccoli and finely chop. Or give a brief run through a food processor if you have one. You want less than 1 cm pieces so that your layers are not lumpy, but not a puree. Mix the chopped roasted broccoli into the blue cheese bechamel. Taste for salt as many strong cheeses are quite salty and then add more salt if needed.
  • Add the ricotta, black pepper, and about 2 teaspoons of salt, and mix in with the cooked onion. Taste for salt before adding the two eggs. Add more salt if needed and then add the eggs. Stir well.
  • Just before assembly, lightly oil a 9x13 casserole dish, and drop lasagna sheets in your boiling salted water for 2-3 minutes to just soften. Drain the sheets and cut noodles as needed to make a single layer in the bottom of the dish. Dot the first layer of pasta with half the blue cheese bechamel and broccoli mixture. Carefully spread into a thin layer.
  • Layer with more pasta. Dot the layer with half of the ricotta mixture. Carefully spread into an even layer. Repeat once more with each filling mixture. Top with the 5th and last layer of pasta. Spread with the plain blue cheese bechamel that was set aside. Cover with foil and place in the oven for 25 min. Bake on a lipped sheet pan to prevent possible splatter issues.
  • Carefully peel the foil off, sprinkle the Parmesan or other cheese on, crank the oven up to 450F and place the rack in the top of the oven for 10 min or until browned. If the cheese is not browned and crusty after 10 min, turn on the broiler and carefully watch. Cool for 10 min before slicing. Serve with a salad dressed with an acidic vinaigrette.

Winter seems to be dragging on and I have been looking for home-style dishes that still inject a little freshness, a little life, a little flavor. I have made a few different versions of this lasagna and we look forward to it every time! Bonus: have your oven help keep your house warm by making a bold, cheesy lasagna that will also warm you from the inside out. My husband and I love strong cheese, but this casserole will please most palates by distributing the strong blue cheese flavor with delicious roasted broccoli and crowd-pleasing pasta layers.

We originally gave this dish idea a try on a complete whim during an urge to make fresh pasta. That might be why I thought I could do the official "measure everything out" version without cooking my storebought lasagna sheets. That was a mistake, now I've learned that this lasagna does not quite have enough moisture to cook the dried pasta sheets like a bolognese style lasagna filling. Lesson received. My attempt to cut corners was still delicious, just chewier pasta than preferred.

So, feel free to make a batch of pasta dough a-la Serious Eats Fresh Pasta Dough or give your pasta sheets a partial cook as I added to the directions, but do not show in this set of pictures. Sorry if this confuses anyone. I promise to add updated pictures when we make this again!

  1. Heat oven to 435F and line a large sheet pan with parchment paper. Rinse and chop broccoli into large bite size pieces. Pile the broccoli on the lined sheet pan, drizzle the olive oil over, and sprinkle with the garlic powder. Massage briefly to distribute oil and garlic powder. Place in the top third of the oven.

2. While the broccoli is roasting, dice the onion. Melt 1 tablespoon of butter in a medium sauce pot. Over medium heat, stirring often, cook onions until translucent and well browned without burning. Scrape out onion into a medium mixing bowl and set aside.

3. Put a large pot of salted water on to boil for your lasagna noodles. Check broccoli, once dark brown in places, remove from the oven to cool to handle.

4. In the pot you cooked the onion, melt the remaining 3 tablespoons of butter on medium-low heat and sprinkle in the flour and thyme. Whisk for a few minutes to cook the flour and warm the two cups of milk in the microwave (a minute to a minute and a half).

5. Turn the heat down to low, pour in a scant two tablespoons milk (eyeball it, measurement not necessary) and whisk vigorously. The flour paste will almost immediately absorb the milk and thicken. Pour in two more tablespoons, whisk vigorously. Keep repeating with small amounts of milk, making sure to clear any clumps from the center of your whisk until the milk isn't immediately absorbed. Increase to about half a cup of milk, whisking in between, until all milk has been added. The bechamel will be thin, this is good because we are going to add gobs of cheese!

6. Crumble in the blue cheese and whisk to make your blue cheese bechamel. Set aside 3/4 cup of the blue cheese bechamel without the broccoli added yet for the final layer of the lasagna.

7. Take the cooled, roasted broccoli and finely chop. Or give a brief run through a food processor if you have one. You want less than 1 cm pieces so that your layers are not lumpy, but not a puree. Mix the chopped broccoli into the blue cheese bechamel. Taste for salt as many strong cheese are quite salty and add if more is needed.

8. Add the ricotta, black pepper, and about 2 teaspoons of salt, and mix in with the cooked onion. Taste for salt before adding the two eggs. Add more salt if needed and then add the eggs. Stir well.

9. Just before assembly, lightly oil a 9x13 casserole dish, and drop lasagna sheets in your boiling salted water for 2-3 minutes to just soften. Drain the sheets and cut noodles as needed to make a single layer in the bottom of the dish. Dot the first layer of pasta with half the blue cheese bechamel and broccoli mixture. Carefully spread into a thin layer.

Note: these pasta sheets pictured are not par-cooked per written instructions.

10. Layer with more pasta. Dot the layer with half of the ricotta mixture. Carefully spread into an even layer. Repeat once more with each filling mixture. Top with the 5th and last layer of pasta. Spread with the plain blue cheese bechamel that was set aside. Cover with foil and place in the oven for 25 min.

11. Carefully peel the foil off, sprinkle the Parmesan or other cheese on, crank the oven up to 450F and place the rack in the top of the oven for 10 min or until browned. If the cheese is not browned and crusty after 10 min, turn on the broiler and carefully watch. Cool for 10 min before slicing. Serve with a salad dressed with an acidic vinaigrette.

Ready to add the final layer of Parmesan and cook at higher temperature.
Look at them layers!
Delicious bubbly cheese!

Hope you give this non-traditional lasagna a try! If you like strong flavors, this fits in nicely as a regular rotation with your favorite salad on the side.

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