Preheat oven to 400° F.
Heat oil in a large skillet. Fry each tortilla lightly; about 10 seconds on each side.
On a working surface, place fried tortilla and fill with 2 tablespoons queso fresco. Roll and arrange in a baking dish. Repeat with each tortilla and queso fresco.
Pour sauce over rolled up tortillas, covering evenly. Top with Monterey Jack cheese and onion rings. Bake for 15 minutes or until cheese has melted and sauce is heated through.
Remove from oven, top with jalapeño slices and cilantro. Serve with rice. Enjoy.