In a saucepan, melt the butter over medium heat.
Add the minced garlic and cook for about one minute, until fragrant.
Pour in the heavy cream and bring the mixture to a gentle simmer.
Stir in the Parmesan cheese and Romano cheese.
Continue cooking, stirring often, until the cheese is fully melted and the sauce is smooth and creamy.
Remove from heat and serve immediately over pasta or your favorite dish.