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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.

Caramelized Onion, Spinach, and Avocado Quesadilla #vegetarian #healthy #recipe

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. 😉

Caramelized Onion, Spinach, and Avocado Quesadilla #vegetarian #healthy #recipe

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

5 from 1 vote

By Julia

Prep: 15

Cook: 1

Total: 1 15

Servings: quesadillas

Stack of quesadillas with cheese, onion, spinach, and avocado.

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Nothing but the BEST quesadilla right here! Avocado and caramelized onions make this crispy cheesy delight absolutely amazing.

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.