Step 1

Preheat oven to 350°. Spread 1/4 cup salsa over bottom of casserole dish.

Step 2

Cook beef in large skillet until brown; drain.

Step 3

Add seasoning mix and water; cook over low heat for 5 minutes or until thickened.

Step 4

Add beans and 3/4 cup cheese; mix well.

Step 5

Fill pasta shells with beef mixture; place on baking dish, filled side up.

Step 6

Spoon remaining salsa over shells; top with remaining cheese.

Step 7

Cover with foil. Bake for 20-25 minutes or until heated through. Sprinkle with green onions and remaining cheese. Serve with sour cream.