01 -
Heat a skillet over medium-high heat. Add ground beef and break up with a wooden spoon. Cook for 5 to 7 minutes until fully browned with no pink remaining. Remove beef from skillet onto a plate, leaving juices in pan.
02 -
While beef cooks, thinly slice onion and bell pepper and finely mince garlic to ensure an efficient cooking process.
03 -
Add butter to the skillet over medium heat until melted. Add onion, bell pepper, and garlic. Cook, stirring occasionally, for 4 to 5 minutes until vegetables soften and onion becomes translucent.
04 -
In a small bowl, whisk together ketchup, Worcestershire sauce, salt, black pepper, cornstarch, and beef broth until smooth and cornstarch is fully dissolved.
05 -
Pour sauce into the skillet with vegetables and stir to combine. Return ground beef to the skillet and mix thoroughly. Cook for 2 to 3 minutes until sauce thickens and coats the beef and vegetables evenly.
06 -
Place hoagie rolls cut side up under the broiler for approximately 1 minute to enhance structure. Watch carefully to prevent burning.
07 -
Place one slice of provolone cheese on the bottom half of each roll. Spoon beef mixture over cheese. Top with an additional slice of provolone if desired.
08 -
Broil the open sandwiches for 1 to 2 minutes until cheese is melted, bubbly, and lightly browned. Serve immediately while hot.