Step 1

Season both sides of the chuck roast with salt and pepper; set aside.

Step 2

Add 2 tablespoons of olive oil to Instant Pot and set to "Saute."

Step 3

When oil becomes hot and shimmery, add pot roast and sear for 4-5 minutes on each side, or until browned all over.

Step 4

While the roast is browning, place onion, potatoes, and carrots in a large bowl (or in a large zip-top plastic bag. Drizzle with remaining 2 tablespoons of olive oil and sprinkle with dry onion soup mix. Toss to coat.

Step 5

Transfer seasoned vegetables to the Instant Pot and arrange around the roast.

Step 6

Pour cola over everything.

Step 7

Place lid on Instant pot with steam valve closed.

Step 8

Switch Instant Pot setting to "manual" and set for 60-80 minutes on "high" pressure. I used 70 minutes for my 1.75-lb. roast, but you can adjust the timing according to the size of your meat.

Step 9

Do a natural release for at least 10 minutes, then quick release.

Step 10

Remove roast from pot, slice, and serve with vegetables.

Step 11

Heat 2 tablespoons olive oil in a large pot or Dutch oven over medium-high heat. Place meat in the pot and sear it for about 3-4 minutes on each side, or until browned all over.

Step 12

While the roast is browning, place onion, potatoes, and carrots in a large bowl (or in a large zip-top plastic bag. Drizzle with remaining 2 tablespoons of olive oil and sprinkle with dry onion soup mix. Toss to coat.

Step 13

Transfer the roast to a large slow cooker. Add seasoned vegetables to the pot and pour cola over everything.

Step 14

Cover and cook on LOW for 6-8 hours or on HIGH for 3-4 hours.

Step 15

Preheat oven to 350 degrees F.

Step 16

Heat 2 tablespoons olive oil in a large pot or Dutch oven over medium-high heat. Place meat in the pot and sear it for about 3-4 minutes on each side, or until browned all over.

Step 17

While the roast is browning, place onion, potatoes, and carrots in a large bowl (or in a large zip-top plastic bag. Drizzle with remaining 2 tablespoons of olive oil and sprinkle with dry onion soup mix. Toss to coat.

Step 18

Transfer seasoned vegetables to the pot and arrange around the roast. Pour the cola over everything.

Step 19

Cover tightly with a lid.

Step 20

Bake roast in a 350-degree oven for about 2 hours. The roast is done when it’s fall-apart tender!