In a large skillet over medium-high heat, cook the ground beef until browned, about 5-7 minutes. Drain excess fat.

Add the minced garlic to the beef and cook for 1 minute until fragrant.

Pour in the teriyaki sauce and beef broth. Stir to combine.

Bring the mixture to a boil, then add the spaghetti noodles. Push them down into the liquid as they soften, ensuring they are submerged.

Cover the skillet, reduce heat to medium-low, and simmer for 10-12 minutes until the noodles are cooked through, stirring occasionally.

Remove from heat and garnish with sliced green onions and sesame seeds. Serve immediately.