Another Way to Deal with Your Garden Zucchini (You're Welcome)

I picked my first--and maybe only--zucchini of the season the other day (I'm battling pests this year that are eating the flowers before they fruit). I really should've picked it earlier, because it was pretty big! Since then, I had been trying to decide what to do with it, and a friend mentioned that he liked it with stewed tomatoes, which I had actually never tried before. So I whipped this up in my magic pot--easy and delish! (And so good for you!)
P.S. Take a stick blender to this, and it would have made a lovely sauce for pasta.
P.P.S.Next time I make this, I am going to add an 8 oz. package of sliced mushrooms to the initial veggie sauté. I think that would be yummy!
P.P.S. A friend suggested that mixing this with rice would make a nice vegetarian main dish. I concur!

Instant Pot Zucchini and Stewed Tomatoes

2 tablespoons olive oil
2 large stalks celery, diced
1 large sweet onion, coarsely chopped
1/2 cup chopped bell pepper (I used an Italian frying pepper for some kick!)
4 cloves garlic, minced
1 large or 2 smaller zucchini, unpeeled, cored, and cubed
1 14.5-ounce can diced tomatoes
1 can (8 ounces) tomato sauce
1 teaspoon dried Italian herbs
1 tablespoon balsamic vinegar
2 teaspoons sugar
1/2 teaspoon kosher salt, or to taste
1/2 teaspoon freshly ground black pepper, or to taste

To the IP on high saute, add the olive oil, celery, onion, sweet or hot pepper, and garlic and saute until the onion is translucent. Then add the zucchini, diced tomatoes, tomato sauce, and Italian herbs. Pressure cook on manual for one minute. Let release naturally--no peeking! Stir in the balsamic vinegar, sugar, salt, and pepper, and serve.