Easy Mushroom Stroganoff

Bahan-bahan (6 porsi)

• ½ pound lean ground beef
• ½ onion (chopped)
• 1 teaspoon garlic powder
• 8 ounces mushrooms (sliced, or 1 can sliced mushrooms, drained)
• 1 ½ cups beef broth
• salt and pepper to taste
• 10 ½ ounces condensed cream of mushroom soup
• ½ cup sour cream
• 3 cups large egg noodles (measured dry and cooked al dente)