Set the Instant Pot to saute mode. Add the oil and saute the onion until translucent.
Add the garlic, smoked paprika, thyme, marjoram, and pepper. Saute for another 2 minutes.
Add the split peas, vegetable stock, vegan Worcestershire sauce, potatoes, and carrots to the Instant Pot.
Put the lid on and set the valve to sealing.
On manual mode, set the Instant Pot to 15 minutes. It will take about 10-15 mins to pressurize before it starts the 15 minute countdown.
When the timer goes off, let the pot naturally release for 15 minutes. To finish depressurizing, carefully manually release the valve ("Quick Release").
Add salt to taste.
Notes
*I use a 6-quart Instant Pot. Use the same recipe for an 8-quart. Halve the recipe for a 3-quart.