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Avocado, Spinach and Caramelized Onion Quesadillas

Who doesn’t love quesadillas? And these avocado, spinach and caramelized onion quesadillas are a healthy twist on one of my favorite snacks. I find that this is a great meal to make when you are entertaining in the kitchen. It takes a little while to make, but it’s easy too, so you are free to have fun with your guests while you are cooking.

The thing that takes the longest is making the caramelized onions. You’re looking at somewhere between 30-40 minutes to get them a deep golden brown color. The good news is that it is really simple to make them. The spinach is cooked up after that, which only takes 2 minutes. Then you’re ready to add your vegetable and cheese filling to the quesadilla, and get them brown and crispy. The avocado is added just before the quesadilla is finished cooking so that it doesn’t get too warm or mushy.

Serve them up with your favorite toppings. I like to use a tomatillo salsa, cilantro pesto or sour cream.

Tip: you can freeze your caramelized onions to use them for something else later.


  • 3 tablespoons grapeseed oil or olive oil
  • 2 large yellow onions, halved and sliced
  • 1/2 teaspoon salt
  • 10 ounces baby spinach
  • 2 cups shredded Monterey jack cheese
  • 2 avocados, pitted, peeled, and sliced
  • 4 large flour tortillas


  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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 pesto.

Source: Oh My Veggies

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