Start the instant pot in SAUTE mode and heat olive oil in it. Add diced onions and minced garlic. Stir and Saute for 2 minutes.
Add diced tomatoes and chopped celery, carrots and zucchini. Add in the italian seasoning, salt, pepper and paprika. Add in the pasta, vegetable broth and white kidney beans. Stir it all up. Make sure the pasta is under the broth.
Press Cancel and close lid with vent in sealing position. Set to SOUP setting (high pressure) for 5 minutes.
When the instant pot beeps, let the pressure release naturally for 5 minutes. Then manually release the pressure.
Stir in the chopped spinach and let it sit for 5 minutes.
Garnish with parmesan cheese (optional) and minestrone soup is ready to serve.