Take 10 oz of spinach & place in a strainer. Let cool/warm water run over it. Break apart the pieces, to where it becomes thawed for the most part & squeeze excess water out & set aside.
In Instant Pot insert pour in buttermilk, sour cream, cream cheese, minced garlic, chopped tomatoes, chopped artichoke hearts, and chopped jalapenos. Then place the drained & squeezed spinach on top of the mixture, stir with a spatula.
Place on high pressure for 4 minutes. Make sure you secure the lid and make sure the steam release valve is locked. Once the Instant Pot cooks on high pressure for 4 minutes, you will see the Instant Pot read LO 00. Then have it naturally release for 5 minutes. It will read LO 05. Then quick release the float valve.
Once the float valve has COMPLETELY dropped you may take the Instant Pot lid off. NEVER take it off until the float valve has dropped. Then still keeping the Instant Pot on, stir with large spoon, until the contents have completely melted. After add in the asiago cheese and parmesan cheese. Continue to stir until full incorporated.
Stir the ingredients until the cheese is fully melted with salt, cayenne pepper and paprika. Then serve! I usually like to let it sit though for 5-10 minutes to thicken. I personally like spinach dip the best after it has cooled a bit and the flavors have been able to meld a bit. Enjoy!