Caramelized Onion, Spinach, and Avocado Quesadilla are a melted cheese lover’s delight! Infused with flavor, this unique recipe is one for the history books.
It’s not every day I post a quesadilla recipe. In fact, this is the first!
This crispy-on-the-outside-smoosh-on-the-inside quesadilla is a sophisticated version of your childhood favorite.
It’s all grown up with rich caramelized onions, Vitamin-infused with spinach, and a real tear-jerking dreamboat with thick slices of avocado.
Caramelized onions are my love language.
I can neither confirm nor deny my burning desire to eat caramelized onions on ice cream.
They may take light years to make, but they are worth their weight in gold.
Plus, you can watch an entire re-run of Gilmore Girls while your onions become fancy.
It’s a low-maintenance method for putting the artisan in your tortilla.
Ingredients for This Recipe:
Onions, spinach, jack cheese, avocado, and tortillas! That’s it! A dreamy lunch or dinner.
Simply use your favorite gluten-free tortillas or regular flour tortillas for this recipe. Luckily most grocery stores carry all sorts of options for tortillas now, including low-carb, grain-free, and gluten-free.
Or replace the tortilla with caramelized onions. Totally comparable substitution. 😉
Get your cheese on!
If you love quesadillas, also try my Grilled Vegetable Avocado Quesadillas with Chipotle Cashew Cream and my Grilled Portobello and Squash Quesadillas.
Caramelized Onion Spinach Avocado Quesadilla
Ingredients
- 3 tablespoons avocado oil or olive oil
- 2 large yellow onions thinly sliced
- 1/2 teaspoon sea salt
- 5 ounces baby spinach
- 2 cups Monterey jack cheese grated
- 2 avocados peeled and sliced
- 4 large flour tortillas
Instructions
- Add the oil to a large sauté pan over medium heat. Add the onions and salt and cook, stirring occasionally, until the onions are soft and deep golden brown, about 30 to 40 minutes. (If the sides of the onions begin cooking too fast, lower the heat to medium-low, add a little more oil, and stir. Your goal is to have the onion slices cook as uniformly as possible.) Remove the onions from the pan and place them in a bowl.
- In the same sauté pan over low heat, add the spinach and cook, stirring frequently, until wilted, about 2 minutes. Remove from heat and transfer the spinach to another bowl, then carefully wipe the pan dry with a paper towel.
- Return the pan to the stove and increase the heat to medium-low. Lay one tortilla flat in the pan. Evenly sprinkle 1/2 cup of cheese over the top. To the bottom half of the tortilla, add 1/4 of the caramelized onions, followed by 1/4 of the wilted spinach. Heat until the cheese melts and the tortilla is browned and crispy.
- Add the avocado slices (about 1/2 of an avocado per quesadilla), and immediately fold the tortilla in half, onto itself, and flip it over. Continue cooking for about 30 seconds or until warmed through.
- Using a spatula, transfer the quesadilla to a cutting board. Cut into fourths. Repeat this process with the remaining ingredients and serve with your favorite salsa or cilantro pesto.
Caramelized onions are also my love language! I think we need a girls night where we eat them on ice cream and drink wine. Good idea? Yes.
P.s Did you know that they FREEZE SO GOOD! So you can eat them ALL THE TIME. best.
This quesadilla? Yes. I love them…and avocados are my 2nd love language. pinned!
I adore caramelized onions too! They’re like the ultimate vegan pizza topping, quesadilla filling, etc…I’ll have to try this variation soon! 🙂
Is it too late to go back in time and get everything together to have this in my lunch? Wait, if I’m going back in time, it’s never too late! Perfect. I can’t resist the call of those sweet, sweet, caramelized onions.
I just got into liking avocados and caramelized onions are my love language so you are speaking to me here girl!
“Caramelized onions are my love language”. Absolutely, yes!
Caramelized onions make everything taste amazing!
They do! They do, those little vixens! 🙂
Mmm, I love a good quesadilla! Especially the ones that require my fancy pants.
Oh yes. There will be no ‘dilla-ing without the fancy pants on 😉 Okay, truth: I ate this thing after a mountain bike ride and I was still wearing my padded shorts and there may have been a lot of sweat involved. But that’s neither here nor there.. 😉
I will definitely be replacing the tortilla with caramelized onions, that is a genus idea, haha! I have a special place in my heart for quesadillas and an even more special place for quesadillas that are dressed up with delicious ingredients like avocado, spinach, and caramelized onions 🙂
Seriously! Sign me up for a bowl of caramelized onions, spinach, cheese and avo! Food don’t get much better than that! 😉
Ever time we have caramelized onions I always think why don’t I make these more often, great flavors here!
Same here! It’s an awful problem to have 😉 I’m all about over-shooting when it comes to sauteing a batch of onions
This is the kind of food that dreams are made from! Caramelized onions, avocado and melted cheese under the same tortilla roof…..count me in!!
haha! Now that you mention it, I do dream about quesadillas from time to time… Glad you like the ‘dilla, Kelli!
Holy yummy Julia, I’m a fool for caramelized onions! Loving these flavors!!!
I love all of these flavors together so I know I would love this wrapped in a crispy, warm, tortilla! YUM!
You have got that smooshy quishy part down. Looks yummy!
Do you deliver? I need this and a beer in my hands stat!
Hmmm…now that I think about it, selling fancy quesadillas over the internet could be a lucrative enterprise…but for you, my dear, I deliver for free 😀
All my favorites in on crispy, cheesy quesadilla. Need this!
Oh heck yes, I don’t know if you can tell, but your name is written all up in that ‘dilla!
This entire quesadilla is my live language.
I speak in caramelized onion tongues also! I feel like we should create our own caramelized onion-based society. Think of how happy our bellies would be.
I’m up for that! Caramelized onions all around!!
gah. what’s better than caramelized onions?! nothing. maybe a pinch of garlic. but ohhhh mah gawd.
all.the.onions.
Oh dear, this looks amazing! Nothing smells better than caramelized onions!!! Mmm and avocado…oh be still my heart!
Thanks for the recipe! Made these the other night and they were great… lots of cheese of course 😉
Wahooo!! I’m so glad you made them, Helen! Aren’t they just ridiculous?! I LOVE the caramelized onions in them.
I totally agree caramelized onions are my love language….I would add garlic to it..omg love avocados
Not sure where I found this recipe the very first time, but it is a winner for a meatless meal! I’ve made it multiple timesand each time is so tasty! I think the first time I forgot the avocado, and it was still delicious! So glad to see the recipe again, as it reminds me I need to make this again!!!
I’m so thrilled to hear it, Susan! Thanks so much for the sweet note! xo
I’ve made it multiple timesand each time is so tasty! I think the first time I forgot the avocado, and it was still delicious! So glad to see the recipe again, as it reminds me I need to make this again!!!
I’m so happy you enjoy it, Emma! Thanks for the sweet note! 😀
I think the first time I forgot the avocado, and it was still delicious! So glad to see the recipe again, as it reminds me I need to make this again!!!
I’m glad I finally made these quesadillas. They are great! I love caramelized onions in/with anything, but I never thought of calling them my love language (until now!). Thanks for a great meal idea.
You’re very welcome! I’m so thrilled to hear you enjoy the quesadillas! Thanks so much for reporting back, Connie! xoxo