Beef Stroganoff 18 | Just A Pinch Recipes

Ingredients

• 3 tablespoon(s) butter
• 1/2 pound(s) fresh mushrooms or 2 four ounce cans
• 1 large onion, cut into 1/2 inch slices
• 1 1/2 - 2 pound(s) flank steak
• 1 tablespoon(s) bottled horseradish
• 1/2 cup(s) water
• 1 teaspoon(s) thick condiment sauce, (your favorite steak sauce)
• 1 1/4 teaspoon(s) salt
• 1/8 teaspoon(s) pepper
• 1 cup(s) sour cream