beef, sirloin tip
cut into thin strips 1 inch wide
Combine flour and salt and pepper to taste.
Add beef strips and toss to coat evenly.
Melt 2 tablespoons butter in large skillet over medium heat.
Add onion and cook until just beginning to become tender.
Add mushrooms and cook briefly.
Remove from pan.
Add additional 2 to 3 tablespoons butter as necessary to sauté meat.
Add floured beef and cook until lightly browned.
Combine beef and onion-mushroom mixture in casserole.
Stir in tomato sauce and tuck in bay leaf.
Cover and bake at 350℉ (180℃).
about 1 hour, or until meat is tender.
Just before serving, stir in sour cream.