June 15, 2021

French Onion Skillet Lasagna

Vegan French Onion Skillet Lasagna – that’s sweet and savory caramelized onion, spinach, and vegan bechamel cooked on the stove alongside lasagna sheet pasta! No baking required! An easy one-skillet dinner your family will love!

a skillet with vegan French onion skillet lasagna topped with caramelized onions

a skillet with vegan French onion skillet lasagna topped with caramelized onions

Dinner tonight! This Vegan French Onion Skillet Lasagna is going to be a new fave for you!

I’m obsessed with one-pan meals like this French Onion Skillet Lasagna for their easy preparation and clean up. They make the perfect weeknight meal as this easy vegan pasta recipe is family-friendly, uses just 1 skillet, and is ready to eat in about 45 minutes!

a bowl of vegan skillet lasagna with a golden fork

a bowl of vegan skillet lasagna with a golden fork

Reasons to love this vegan skillet lasagna:

This meal is quicker than making a regular lasagna as we do not bake it but cook it in a skillet on the stovetop. No oven required and way fewer dishes to clean than with a traditional lasagna. Plus no layering needed which also cuts down on prep time. That pasta just goes in with all the other ingredients.

It is still going to be a little labor of love. Think of french onion soup! You have to take the time to caramelize the onions properly – it takes about 25 minutes to get them where they should be. It’s a rewarding little dinner project and best to do when you feel like spending some quality time in the kitchen.

More vegan pasta recipes:

overhead shot of ingredients needed for making skillet lasagna

overhead shot of ingredients needed for making skillet lasagna
Creamy cheesy vegan white sauce and lots of caramelized onions, mushrooms and some spinach cooked on the stovetop alongside lasagna pasta sheets.

Give.me.the.whole.pan. Right?

French Onion Skillet Lasagna

Vegan French Onion Skillet Lasagna – that’s sweet and savory caramelized onion, spinach, and vegan bechamel cooked on the stove alongside lasagna sheet pasta! No baking required! An easy one-skillet dinner your family will love!

Prep Time5 mins

Cook Time45 mins

Total Time50 mins

Course: Main Course

Cuisine: American

Keyword: French onion skillet, skillet lasagna, vegan lasagna

Servings: 4

Calories: 308kcal

Author: Vegan Richa

Ingredients

Caramelized French Onions

  • 1 yellow onion thinly sliced
  • 2 Tbsp vegan butter
  • 2 cloves garlic minced
  • ½ tsp dried thyme
  • ¼ tsp salt
  • tsp black pepper
  • 1 ½ Tbsp balsamic vinegar or 2-3 Tbsp red wine
  • ½ – 1 cup (144 g) mushrooms Thinly sliced

White Sauce

  • ½ cup raw cashews soaked for at least 20 mins in hot water, see notes for Nutfree option
  • 1 cup (236.59 ml) broth
  • 2 tsp lemon juice
  • 2 Tbsp nutritional yeast
  • 1 tsp italian seasoning – I use a mix of oregano thyme, sage and rosemary
  • ½ tsp salt
  • 1 tsp miso
  • tsp black pepper

For the lasagna

  • 5 lasagna pasta sheets broken into pieces, or use 4-5 oz any other flat pasta shape
  • 1-2 cups spinach firmly packed
  • 2 cups (473.18 ml) broth
  • Red pepper flakes optional for serving

Instructions

  • Heat a skillet over medium heat then add butter with onions and cook for about 8 mins, or until onions start to look translucent

  • Add in the garlic, thyme, salt and pepper and continue to cook until onions turn a golden color

  • Add the balsamic vinegar or red wine and mix well, continue to cook until onions begin to caramelize. Remove ¾ of this mixture and save to use as garnish later

  • Add in the mushrooms and mix well, continue to cook for 1-2 minutes

  • Meanwhile make your white sauce – blend all ingredients together until smooth. Add the white sauce to the onion skillet and mix

  • Add in the broken pieces of lasagna sheets and 2 cups of broth, press down the sheets so they are completely submerged under the broth completely

  • Cover the skillet and cook for 12-15 minutes or until lasagna sheets are cooked – make sure to check for doneness and make sure to stir once in between so mixture doesn’t burn on the bottom. Reduce the heat if the mixture starts to stick to the bottom.

  • Once the lasagna sheets are cooked, mix in the spinach and stir. Remove from heat and cover, let sit for 3 minutes to allow spinach to wilt

  • Top this with the reserved caramelized onion mixture, some red pepper flakes (optional)  and serve warm. Serve with garlic bread or any side dish of choice

Notes

  • To make the pasta nut-free, you can use my nut-free Alfredo. or use silken tofu like my Spinach Artichoke Pasta Bake
  • to make the soyfree, use chickpea miso
  • To make this Glutenfree, use Glutenfree lasagna or pasta 

Nutrition

Nutrition Facts

French Onion Skillet Lasagna

Amount Per Serving

Calories 308 Calories from Fat 117

% Daily Value*

Fat 13g20%

Saturated Fat 3g19%

Trans Fat 1g

Sodium 561mg24%

Potassium 485mg14%

Carbohydrates 39g13%

Fiber 4g17%

Sugar 5g6%

Protein 11g22%

Vitamin A 987IU20%

Vitamin C 6mg7%

Calcium 50mg5%

Iron 3mg17%

* Percent Daily Values are based on a 2000 calorie diet.

Ingredients for French Onion Skillet Lasagna

  • lasagna noodles – obviously. You can use gluten-free.
  • for the onions, we slowly sautee white onions in vegan butter along with salt, garlic, thyme and pepper until perfectly brown. A splash of wine or vinegar helps the caramelization process.
  • some mushrooms and spinach – because any white lasagna just calls for those additions
  • For our vegan bechamel sauce we are blending cashew nuts with broth and  lemon juice. I add some nutritional yeast and miso paste to make it cheesy.

a white bowl with one skillet French Onion Lasagna with spinach and vegan bechamel

a white bowl with one skillet French Onion Lasagna with spinach and vegan bechamel

Tips & Substitutions:

  • This recipe is perfect for using up those broken lasagna sheets you always get at the bottom of the pack. You can also use other flat pasta of choice
  • And yes, you can make this entire thing ahead of time and reheat. Or just make the onion mix and the bechamel as part of the prep. That’s a great idea if you really want to have this on a weeknight.
  • While caramelizing the onions, spread the onions out evenly over the pan and let cook slowly, stirring occasionally.
  • Depending on how strong your stovetop burner is you may need to reduce the heat to medium or medium low to prevent the onions from burning or drying out.

How to Make French Onion Skillet Lasagna:

onion slices in a black skillet

onion slices in a black skillet

Heat a skillet over medium heat then add butter with onions and cook for about 7-8 mins, or until onions start to look translucent

slightly golden sauteed onion sliced in a skillet

slightly golden sauteed onion sliced in a skillet

Add in the garlic, thyme, salt, and pepper and continue to cook until onions turn a golden color.

garlic being added to caramelized onion slices in a skillet

garlic being added to caramelized onion slices in a skillet

Add the balsamic vinegar or red wine and mix well, continue to cook until onions begin to caramelize. Remove ¾ of this mixture and save to use as garnish later.

caramelized browned onion in a black skillet

caramelized browned onion in a black skillet

perfectly caramelized onion in a skillet

perfectly caramelized onion in a skillet

mushrooms being added to caramelized onions in a skillet

mushrooms being added to caramelized onions in a skillet

Add in the mushrooms and mix well, continue to cook for 1-2 minutes

mushrooms and caramelized onion in a black skillet

mushrooms and caramelized onion in a black skillet

Meanwhile make your white sauce – blend all ingredients together until smooth

Add the white sauce to the onion skillet and mix

lasagna noodles being added to a skillet to make skillet lasagna

lasagna noodles being added to a skillet to make skillet lasagna

Add in the broken pieces of lasagna sheets and 2 cups of broth, press down the sheets so they are completely submerged under the broth completely

vegan bechamel sauce being added to lasagna noodles and caramelized onion is a pan

vegan bechamel sauce being added to lasagna noodles and caramelized onion is a pan

Cover the skillet and cook for 12-15 minutes or until lasagna sheets are cooked – make sure to check for doneness and make sure to stir so the mixture doesn’t burn on the bottom. Reduce the heat if the mixture starts to stick to the bottom and makes sure to keep stirring

Once the lasagna sheets are cooked, mix in the spinach and stir. Remove from heat and cover, let sit for 3-4 minutes to allow spinach to wilt

overhead shot of a skillet with lasagna pasta cooking in vegan bechamel

overhead shot of a skillet with lasagna pasta cooking in vegan bechamel

Top this with the reserved caramelized onion mixture, some red pepper flakes (optional)  and serve warm. Serve with garlic bread or any side dish of choice

a black skillet with vegan French Onion Skillet

a black skillet with vegan French Onion Skillet

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