FOUND IT: At Fab Food Friday, another recipe blog you should be reading. Jody's recipes are great and easy to make - I've never made a Fab Food Friday recipe that I didn't want to make again.
I started off with this recipe as a standby for when company is visiting, but now I make it all the time.
1 lb. lean ground beef (you can use turkey or chicken to reduce fat)
1 large onion, chopped
2 cups salsa
1 can (15 oz.) black beans, drained, rinsed
2 Tbsp. taco seasoning mix, either from a pouch or a recipe like this one.
6 flour tortillas (8 inch)
1 cup sour cream
1 pkg. shredded cheese, Mexican or Co-Jack
Brown meat with onions in large skillet on medium-high heat; drain. Add salsa, beans and seasoning mix; mix well.
Arrange 3 of the tortillas in single layer on bottom of 13x9-inch baking dish; cover with layers of half each of the meat mixture, sour cream and cheese. Repeat all layers. Cover with foil.
Bake covered for 30 min at 400. Remove foil. Bake an additional 10 min. or until casserole is heated through and cheese is melted. Let stand 5 min. before cutting to serve.