I got this recipe from Carrie (actually her mom!) and it's quick and easy as well as delicious!
Santa Fe Enchiladas
1 can green enchilada sauce (numerous brands are available--I like Hatch)
1 can black beans, rinsed and drained
2 c. cooked, chopped chicken
1 dozen corn tortillas
1 1/2-2 c. shredded cheddar or colby jack
Preheat oven to 375. In a greased 9x13 pan, pour and spread some of the sauce in the bottom. Layer several tortillas across sauce. Cover tortillas with a scoop of beans and half the chicken and cheese. Then pour on the rest of the sauce and repeat layers: tortillas, beans, chicken, cheese. Bake for 30 minutes.