Slow-Cooker Beef Stroganoff | America's Test Kitchen

Ingredients

• 1 1/2 cups low-sodium beef broth
• 1/4 cup dried porcini mushrooms, rinsed and patted dry
• 2 tablespoons vegetable oil
• 2 onions, chopped fine
• 2 tablespoons tomato paste
• 1/2 cup white wine
• 1/3 cup soy sauce
• 4 pounds boneless beef chuck stew meat cut into 1 1/2-inch pieces (see note)
• 1 pound white mushrooms, cleaned and quartered
• 6 tablespoons all-purpose flour
• 1 1/2 cups sour cream
• 2 tablespoons chopped fresh dill leaves
• Salt and pepper