Brown the Beef
Heat a large (cast-iron) skillet over medium heat. Add ground beef and cook ~5 min, breaking it up, until no pink remains. Drain, reserving 1 Tbsp fat in the pan; set beef aside.
Sauté Aromatics
In the reserved fat, cook diced onion 3–4 min until translucent. Add mushrooms; sauté 2 min until they begin to caramelize.
Add Beans & Seasonings
Stir in green beans, minced garlic, and broth. Cook 2–3 min until beans turn bright green and remain crisp-tender.
Create Creamy Base
Reduce heat to medium-low. Melt in cream cheese, stirring until smooth. Blend in sour cream to form a creamy sauce.
Combine & Season
Return cooked beef to skillet. Add salt, pepper, Worcestershire sauce, and thyme. Stir gently until everything is evenly coated.
Cheese Topping
Sprinkle Colby Jack evenly over the surface.
Melt & Serve
Option A (broiler): Place skillet under broiler 1–2 min until cheese is golden and bubbly.
Option B (stovetop): Cover and cook on low 3–4 min until cheese melts. Serve hot.
