Filled with corn, black beans, and cheese, these quesadillas make a hearty lunch or supper. Serve them with your favorite salsa.
Choose ears of corn with bright green husks that are tightly closed. The ends of the corn silk should be golden brown, not pale -- an indication that the corn was picked too early.
To easily remove corn silk from the kernels, hold the ear in one hand and rub downward with a wet paper towel.
To remove corn kernels for a salad or salsa, stand an uncooked ear in a shallow bowl and use a sharp, thin-bladed knife. For chowder, add another step: reverse the knife and run the dull side down the ear to press out the rest of the corn and its milk.
In a large bowl, gently toss together the corn, zucchini, cilantro, jalapeno, beans, salt, pepper, and chili powder. Stir in the cheese.
Heat the oven to 200º. Set the tortillas on a work surface. Put about 1/3 cup or more of the filling on half of each tortilla, spreading it to the edge and then folding the other half over it.
In a large nonstick frying pan, heat 1/2 tablespoon of the oil over medium heat. Add 2 of the quesadillas to the pan and cook them for about 2 minutes per side, until the cheese melts. Transfer them to a baking sheet and keep them warm in the oven while you cook the remaining quesadillas, adding a bit more oil to the pan for each batch. Cut the quesadillas into wedges. Serves 4 to 6.