Spinach and Onion Quesadillas - The Scramble

Ingredients

• 1 Tbsp. extra virgin olive oil
• 1 large yellow onion (halved and sliced into thin half rings)
• 6 - 9 oz. baby spinach (or use arugula, sliced bell peppers or mushrooms)
• 8 whole wheat or flour tortillas (use wheat/gluten-free tortillas if needed)
• 2 cups shredded Cheddar or Monterey jack cheese
• 1 cup salsa and/or guacamole (for serving (optional))