Maddison believes his game has come on since Brendan Rodgers arrived last year, but credits Vardy with bringing him to the King Power Stadium in the first place.
He told theGary Newbon Sports Show: "It's lovely for me, being an attacking midfield player.
"I know the type of player I am and I've watched Jamie Vardy in the Premier League for a number of years now.
"I knew me and him would compliment each other and I really hoped we'd build a relationship on and off the pitch.
"We're very good friends off the pitch and it shows off the pitch, we're on the same wavelength. In training we've worked hard on stuff.
"As an attacking midfield player what you want from your striker is a willing runner, someone who can score goals and someone who listens to what you want as well. He ticks all three boxes."