Classic Beef Stroganoff With Sour Cream Recipe

Ingredients (11)

• 1 1/2 pounds lean beef (top sirloin or similar)
• 1 teaspoon kosher salt
• 1 teaspoon ground black pepper
• 2 tablespoons unsalted butter, divided
• 1 tablespoon all-purpose flour
• 1 cup beef stock, preferably unsalted or low sodium
• 1 tablespoon extra-virgin olive oil
• 1 medium onion, sliced 1/4-inch-thick lengthwise
• 3 tablespoons sour cream, at room temperature
• 1 tablespoon finely chopped fresh parsley, garnish
• Hot buttered noodles, optional