Twenty minutes before starting the recipe, place heavy cream on the counter to allow it to come closer to room temperature.
Add butter to a large skillet and melt over medium heat.
Add the diced prosciutto. Sauté in the butter for 1 minute.
Add peas, sauté for 1-2 minutes.
Add roasted red peppers and garlic, sauté for 30 seconds.
Add cream, salt and pepper and increase the heat to medium-high heat. Stir constantly as the cream thickens and comes to a gentle simmer, about 2-3 minutes. I like to use a wooden spoon to stir at this point. When the sauce coats the back of the spoon without immediately sliding off, it's thick enough!
Reduce to medium-low heat. Add cooked pasta or ravioli and stir to coat. Then, add Parmesan cheese.
Serve warm, with optional garnishes.
Notes
If too thick, add a splash of pasta water to help loosen it up. You should have a large pot of salted water on hand from the ravioli!