Brown roast on all sides in hot oil in a pressure cooker over medium-high heat. Add carrot and remaining ingredients; close cover securely.
Place pressure regulator on vent pipe, and cook 45 minutes with pres-sure regulator rocking slowly. Remove from heat.
Run cold water over pressure cooker to reduce pressure instantly; remove lid so that steam escapes away from you.
Dutch oven method: Brown roast on all sides in hot oil in a large Dutch oven over medium-high heat. Add carrot and remaining ingredients. Cover, reduce heat, and simmer 3 hours or until roast and vegetables are tender.
This is my new go-to pot roast recipe. I use an electric pressure cooker. I do rub the roast with salt, pepper, thyme, oregano, and paprika. Let it sit for about 15 minutes before browning. That's the only change I made.