Black Bean and Corn Quesadillas

Ingredients 2 teaspoons olive oil 3 tablespoons finely chopped onion 1 (15.5 ounce) can black beans, drained and rinsed 1 (10 ounce) can whole kernel corn, drained 1 tablespoon brown sugar 1/4 cup salsa 1/4 teaspoon red pepper flakes 2 tablespoons butter, divided 8 (8 inch) flour tortillas 1 1/2 cups shredded Monterey Jack cheese, … Read more