Set Instant Pot to the SAUTÉ setting. Add the olive oil and allow to heat for 1 minute. Add the onion and cook, stirring occasionally, until softened, about 5 minutes. Stir in the garlic, oregano and thyme, and cook for 1 minute.
Add the frozen mix vegetables, frozen green beans, petite diced tomatoes, vegetable broth, salt and pepper, and stir to combine.
Put the lid on the Instant Pot, close the steam vent and set to HIGH pressure using the MANUAL or PRESSURE COOK setting (depending on the Instant Pot you have). Set the time to 4 minutes.
Once the time is expired, wait for 5 minutes, then carefully use the quick release valve to release the steam. Stir in the parsley. Season to taste. Serve.
For The Stovetop:
Heat the olive oil in a large saucepan set over medium heat. Add the onions and cook until tender, about 5 minutes. Stir in the garlic, oregano and thyme, and cook for 1 minute.
Add the frozen vegetables, vegetable broth, crushed tomatoes, salt and pepper, and stir to combine.
Bring to a boil, then reduce heat and simmer for 20 minutes, stirring occasionally.
Stir in the parsley. Season to taste with salt and pepper. Serve.
Notes
Please note that I am not a medical or nutritional professional. I provide nutritional information for my recipes as a courtesy to my readers. It is calculated using the LoseIt! calculator. While I attempt to provide information that is as accurate as possible, you should calculate the nutritional information independently before relying on it.