01 - Combine the cooked rice, chopped broccoli, shredded cheddar, Parmesan, eggs, garlic powder, onion powder, salt, and pepper in a large mixing bowl until fully incorporated and sticky.
02 - With damp hands, form the mixture into 1 1/2-inch balls, pressing each firmly to ensure they hold together. Yield approximately 20 balls.
03 - Arrange three bowls: one with flour, one with beaten eggs, and one with panko breadcrumbs.
04 - Coat each formed ball in flour, dip in egg, and then roll in panko breadcrumbs. Place breaded balls on a tray.
05 - Pour vegetable oil into a deep pan to a 2-inch depth and heat to 350°F (175°C).
06 - Fry balls in batches, turning occasionally, until golden brown and crisp—about 3–4 minutes. Avoid overcrowding.
07 - Transfer fried balls to paper towels using a slotted spoon and drain. Present warm with a dipping sauce of choice.