01 -
Cook ground beef over medium-high heat until browned and cooked through; drain excess fat and remove from pot.
02 -
Boil potatoes in salted water until fork-tender; drain and mash with butter and sour cream; set aside.
03 -
Cook diced onion in butter over medium heat until softened, approximately 5 minutes; add garlic and cook an additional minute.
04 -
Whisk in flour and cook stirring continuously for 1 minute to eliminate raw flavor.
05 -
Gradually pour in chicken broth while stirring, scraping any browned bits from the bottom to enrich flavor.
06 -
Stir in half-and-half and Worcestershire sauce; bring mixture to a boil, then reduce heat to simmer.
07 -
Stir mashed potatoes into broth mixture until well incorporated; blend with an immersion blender until creamy if available.
08 -
Return ground beef to pot along with frozen vegetables; heat through for about 5 minutes.
09 -
Remove pot from heat; gradually sprinkle in shredded cheddar while stirring gently until fully melted and smooth; season with salt and pepper to taste.