Simple Beef Pot Roast

Step 1
Preheat the oven to 275 degrees F (135 degrees C).

Step 2
Heat vegetable oil into a large oven-safe pot over medium-high heat. Season chuck roast with salt and black pepper, then cook in hot oil until brown on both sides; transfer to a plate.

Step 3
Add carrots, celery, and onion into the pot. Cook and stir until vegetables start to release their juices, scraping any brown flavor bits off the bottom of the pot, about 3 minutes. Add butter, and cook until onions are translucent, about 5 minutes. Sprinkle in rosemary; return roast to the pot and cover.

Step 4
Roast in the preheated oven until the chuck roast is tender, about 2 1/2 to 3 hours. Season vegetables with additional salt and black pepper, if desired.