Set your Instant Pot to sauté and add the broth.
Once heated, add the onions and sauté until softened, about 3-4 minutes.
Add the mushrooms and cook for another 2-3 minutes.
Add thyme and rosemary.
Add the seasonings and stir to coat the mushrooms and onions.
Add tomato paste and stir again. Add the remaining broth and stir to combine everything, be sure to scrape up any bits that have stuck to the bottom of the pot.
Add carrots, potatoes, celery, and stir once again. Cancel saute function.
Add bay leaf, place and lock lid onto the pot, and close the pressure release valve.
Set to pressure cook for 12 minutes.
The pot will take about 10 minutes or more to come to pressure.
While the stew is pressure cooking, make combine the flour with 2 cups of broth and blend in a blender. Set aside.
When the pressure cooking time has ended, press cancels and open the pressure release valve to manually release the pressure.
Once pressure has been released and the float valve pin has dropped, slowly unlock and remove the lid.
Remove the bay leaf, thyme stem, and rosemary and stir the mixture so everything recombines.
Stir the blended flour mixture into the stew.
Now, add the red wine.
Then, add the frozen peas
Garnish with chopped fresh parsley.