Steak Tacos

1 lb. sirlion steak (cooked and chopped in 1/2 pieces)
1 package taco seasoning mix
3/4 cup water
1 can pinto beans (drained)
1/2 cup sliced green onions
1/2 cup chopped tomato
10 taco shells
shredded lettuce
2 cups grated Monterey Jack cheese

In a large skillet, combine meat, taco spices and water. Bring to a boil; reduce heat and simmer, uncovered, 7 minutes. Stir in beans, green onions and tomato. Heat taco shells in 350 degree oven 5 minutes. Spoon in warm meat mixture into shells. Top with lettuce and cheese. Serve with sour cream and salsa.