My nana said she made these 'Marry Me' meatballs to woo her hubby! ....and it worked

1 pound ground beef
1/2 cup breadcrumbs
1/4 cup grated Parmesan cheese
1/4 cup milk
1 egg
2 cloves garlic, minced
1 teaspoon dried Italian seasoning
Salt and pepper to taste
2 tablespoons olive oil
1 jar (24 oz) marinara sauce
1/2 cup heavy cream
1/4 teaspoon red pepper flakes (optional)
Fresh basil for garnish
Directions