I've never had Prosecco but a number of California winemakers make some very fine sparkling wine: Schramsburg, S. Anderson and Pacific Echo.
Prosecco is just the generic term for very dry Italian sparkling wine. It is very clean and has a wonderful flavor. Most avid wine drinkers that think they generally dislike champagne love prosecco.
There is good California sparkling wines that I find very acceptable, but most of the ones that are really good are very substantially more expensive than their Italian counterparts. I have a ton of California wine in my cellar, but no California bubbly even though I have tasted quite a bit. I was never a huge fan of champagne at any price until the lady of the house brought home a bottle of prosecco that one of our wine suppliers told her to try.