Di's Beef Stroganoff

This is my favorite Beef Stroganoff recipes! This is one of my tried and trues out of one of my older cookbooks! It's another comfort food of mine. Yum!

Di's Beef Stroganoff

1 to 2 pounds sirloin steak, 1/2 inch thick
2 Tablespoons butter
8 ounces mushrooms, sliced
2 medium onions, sliced
1 clove garlic, finely chopped (or 1 teaspoon minced)
2 Tablespoons Butter
1/2 cup water
1 teaspoon (or 1 cube) instant Beef Bouillon
1 teaspoon salt
1/4 teaspoon ground black pepper
1 cup dairy sour cream
1 /2 teaspoon prepared mustard
Fresh parsley for garnish
Hot cooked noodles or rice

Cut beef across the grain into strips, 1 1/2 by 1/2 inch. (for easier cutting, partially freeze beef, about 1 1/2 hours)
Heat 2 Tablespoons butter in a large skillet. Add mushrooms, onions and garlic. Cover and simmer, stirring occasionally, until onions are tender, about 5 to 10 minutes. Remove vegetables from skillet.

Heat the other 2 Tablespoons butter in skillet and add beef. Cook and stir until meat is brown, about 10 minutes. Add water, bouillon, salt and pepper. Heat to boiling, reduce heat. Cover and simmer until beef is cooked through, about 10 to 15 minutes. Add vegetable mixture. Heat to boiling; reduce heat. Stir in sour cream and mustard. Heat just until hot. Garnish with fresh snipped parsley; serve over hot cooked noodles.