Instant Pot Dump Stew

1 Salt the stew beef with 2 teaspoons of the salt and add it to the Instant Pot.
2 Add the remaining ingredients EXCEPT FOR THE CORNSTARCH to the Instant Pot and stir to combine the ingredients.
3 Set the Instant Pot to “Manual” for 35 minutes. Once done, let the Instant Pot depressurize naturally.
4 Using a slotted spoon, scoop out the meat and majority of the vegetable (leaving some bits of the onions, carrots and tomatoes behind in the sauce) into a large bowl and cover with aluminum foil.
5 Set the Instant Pot to “Saute” and sauté the sauce for 10 minutes then turn off the Instant Pot. Transfer the sauce to a blender and blend on high until smooth. Return the sauce to the Instant Pot and tun off the "Sautee" function. 
6 In a small bowl, combine the cornstarch with 2 tablespoons of water to create a slurry. Slowly pour the cornstarch slurry into the sauce and stir to combine, the sauce will slightly thicken. 
7 Add the meat and vegetables back into the Instant Pot.
8 Serve over mashed potatoes or spaghetti squash.