Easy Hamburger Stroganoff

Ingredients

• 1 lb. ground beef
• 1 medium onion, chopped
• 2 Tbsp. all-purpose flour
• 1/2 tsp. salt
• 1/2 tsp. garlic salt
• 1/4 tsp. pepper
• 1 (8 oz.) can mushroom stems and pieces, drained
• 1 (10 3/4 oz.) can cream of chicken soup
• 1 (8 oz.) pkg. egg noodles, cooked and drained