Line a baking sheet with parchment or wax paper. Set aside.
Prepare a large deep pan with vegetable oil. Fill until the oil reaches about 2 - 3 inches in the pan. Heat the oil to 350 degrees Fahrenheit.
Using 2 shallow bowls, pour 1 cup of Italian breadcrumbs and ¼ cup of parmesan cheese into one bowl and combine. In the other bowl, add 1 egg and ¼ cup of whole milk and whisk until blended.
Dip each thawed ravioli into the egg/milk mixture, coat the entire ravioli, then dredge them through the breadcrumb mixture, ensuring each ravioli is well covered with breadcrumbs. Place on the prepared baking sheet.
Next, working in batches of 6 - 8 at a time, place the ravioli into the hot oil and fry for about 3 - 5 minutes or until the ravioli is golden brown and crispy around the edges. Use a slotted spoon or tongs to flip the ravioli at least once during the frying time. Remove from the hot oil and place on a paper towel.
Garnish with ¼ cup of grated parmesan and freshly chopped Italian parsley.
Serve with your favorite marinara sauce and enjoy immediately!