In a medium sauté pan, over medium heat, melt butter and add the chopped onion, corn, and garlic. sauté the vegetables until the onion is tender and the fresh corn darkens in color. This will be about 7 minutes.
While the corn, onion, and garlic are cooking, bring a medium saucepan of water to a boil. Cook the tortellini according to the package directions. Once the tortellini is tender, drain and set aside.
Add the white vinegar, heavy cream, and Italian seasoning to the sautéed corn, onions and garlic. Simmer for about 5 minutes so the sauce begins to thicken.
Add in the cooked tortellini and stir. Remove from heat and add in the parmesan cheese.
Mix well and serve immediately.
Top with additional parmesan cheese and salt and pepper to taste if desired.
Notes
Depending on what type of tortellini you are cooking, the cooking process can go quick. Don't forget your boiling pasta as you continue to make the meal. Frozen, and fresh tortellini will cook fast. Dried tortellini will take longer to cook.
This meal can work with canned or frozen corn but it is best with fresh corn. When it isn't summer that's hard to find so I recommend frozen corn for this recipe.
If you don't have heavy cream, milk can be substituted. Whole milk is preferred but others will work. Be aware that the sauce will not thicken as easily when not using heavy cream or whole milk.