Place sweet potatoes and carrots in a large bowl. Toss with a little oil, salt and pepper and set aside.
Set your pressure cooker to saute mode to preheat. While waiting, pat your pork roast dry and season generously with oil, salt and pepper.
Once the pot is hot add 1tbs of oil and then add the pork and sear for about 2-3 minutes per side.
Once pork has been seared on all sides, remove the meat from the pan and set aside
Add in 1tbs of oil to the pot and add in thinly sliced onions, and a light sprinkle of salt. Cook onions for 3 minutes stirring frequently.
After 3 minutes, add in 1tbs of dried Italian Herb Seasoning to the pan with the onions. Continue to cook onions with herbs for another 2-3 minutes, stirring frequently.
Add minced garlic to the pan and stir constantly of about 30 seconds, until garlic if fragrant
Now add wine to the pan to deglaze, making sure to scrap up any brown bits. Cook for 2 minutes
Switch pressure cooker off saute mode and add in broth and tomatoes. Stir well to combine.
Return pork roast and it's juices to the pot.
Carefully dump carrots and sweet potato on top. Do not sir, just place them on top of the roast