Crispy Mushroom Quesadillas

Name: Crispy Mushroom Quesadillas
Ingredients: ½ tsp. coriander seeds; ½ tsp. cumin seeds; ½ tsp. fennel seeds; ½ tsp. dried oregano; ½ tsp. smoked paprika; 2 Tbsp. extra-virgin olive oil; 8 oz. mushrooms (such as oyster and/or maitake), torn into large pieces; Kosher salt; 2 garlic cloves, thinly sliced; 2 Tbsp. unsalted butter; 6 oz. sharp cheddar, coarsely grated (about 1½ cups); 2 10–12 flour tortillas; Pickled or very thinly sliced raw red onion, cilantro leaves with tender stems, and hot sauce (for serving); A spice mill or mortar and pestle