**Cheesy Spinach & Caramelized Onion Quesadilla****Ingredients List****For the Caramelized Onions*** **2 medium onions** (thinly sliced)* **1 tbsp olive oil*** **1 tsp butter*** **½ tsp salt*** **1 tsp balsamic vinegar** (optional, for depth)* **4 medium flour tortillas** (whole wheat or spinach wraps also work)* **1 ½ cups shredded cheese** (mozzarella, cheddar, Monterey Jack, or a blend)* **2 cups fresh spinach leaves** (washed, stems removed)* **1 clove garlic** (minced)* **½ tsp chili flakes** (optional, for heat)* **1 tbsp olive oil or butter** (for crisping tortillas)**Instructions**1. **Caramelize Onions:** * Heat olive oil and butter in a skillet over medium heat. * Add sliced onions and salt. Cook slowly, stirring often, for 12–15 minutes until golden brown. * Optional: Stir in balsamic vinegar at the end for extra flavor. Remove from skillet and set aside.2. **Sauté Spinach:** * In the same pan, add a drizzle of olive oil and garlic. * Toss in spinach and cook for 2–3 minutes until just wilted. Remove from heat.3. **Assemble Quesadilla:** * Place one tortilla on a flat surface. Sprinkle ¼ of the cheese evenly. * Add caramelized onions and spinach. Top with more cheese, then cover with another tortilla.4. **Cook Quesadilla:** * Heat a skillet with a little olive oil or butter. * Place quesadilla in skillet, cook 3–4 minutes per side until tortilla is golden and crispy and cheese is melted.5. **Cut & Serve:** * Slice into wedges. Serve hot with salsa, sour cream, or a yogurt dip.**Additional Notes*** The slow caramelization of onions is the secret to deep, sweet flavor.* For extra crispiness, brush tortillas lightly with oil before cooking.