Cook rice according to package directions or Instant Pot 1:1 method, fluff with a fork, and set aside to cool.
Heat a large skillet over medium-high heat. Add ground beef and minced sweet onion and cook, breaking up the meat, until browned, 8 to 10 minutes.
Add minced garlic and smoked paprika; cook, stirring constantly, for about 1 minute until fragrant. Season with salt and pepper to taste. Drain excess fat if needed.
In a small bowl, whisk together Worcestershire sauce, honey, soy sauce, and hot sauce.
Pour the sauce over the beef and stir to coat. Mix cornstarch with water to make a slurry, then stir it into the skillet until the sauce thickens slightly.
Reduce heat to low and simmer for 3 to 4 minutes until the sauce reduces and coats the beef evenly.
Spread cooked rice on one sheet pan and the beef mixture on another. Cool both for 30 to 45 minutes before packing.
Portion about 1/2 cup rice into each freezer-safe container, then top with the beef mixture, dividing evenly among 10 portions.
Store sliced green onions and sesame seeds separately in small containers for topping after reheating.
Seal and label all containers with the date and contents. If using vacuum seal bags, flash freeze flat for 1 hour, then stack vertically.
To reheat: Add 1 tablespoon water, cover, and microwave 2 to 3 minutes if thawed or 4 to 5 minutes if frozen. Stir halfway and ensure the center reaches 165°F.