Ladabie has agreed a new 12-month deal at Meadow Lane and is hoping to make a significant impact at the Magpies next season.
The 22-year-old told the club's official website: "I'm chuffed to bits because it's been going on all summer and I can kick on now and concentrate on the season ahead.
"I want to build on last year, play more games and I want to score more goals and do as well as I can for Notts County Football Club.
"I'm 22 now and I want to be playing every game, and I really want to make a name for myself this season."
Ladabie scored two goals in 29 appearances for County last season.