Pat steak tips dry, then season all over with the salt and pepper.
Heat the olive oil and 1 tablespoon butter in a large skillet over medium-high heat.
Sear steak tips in two batches until browned, 2–3 minutes per side. Transfer to a plate with juices.
Melt remaining 1 tablespoon butter in the pan. Add mushrooms and cook until browned, about 5 minutes.
Stir in onion; cook until softened, 3–4 minutes. Add garlic and thyme; cook 30 seconds until fragrant.
Splash in Worcestershire and soy sauce. Scrape up browned bits from the skillet.
Whisk flour with water to make a smooth slurry. Pour broth and slurry into the pan, whisking to combine.
Simmer, stirring, until the gravy gently thickens, 3–5 minutes. Stir in heavy cream, if using.
Return steak and any juices to the pan. Simmer 2–3 minutes to warm through without overcooking.
Taste and adjust seasoning. Finish with parsley and serve hot.
Notes
Try a splash of dry red wine with the Worcestershire for deeper flavor. Serve over mashed potatoes, buttered egg noodles, or rice. For a gluten-free version, swap the flour slurry for 1 tbsp cornstarch mixed with 1 tbsp water. Leftovers keep 3 days refrigerated; reheat gently with a splash of broth.This recipe is an original creation inspired by classic Easy Steak Tips with Mushroom Gravy flavors. All ingredient ratios and instructions are independently developed.