Jamie Vardy needed just 20 minutes to show Leicester what they have been missing as he inspired the Foxes to their first league win of 2022.
After more than two months out with a hamstring injury, Vardy replaced Patson Daka in the 72nd minute with the match goalless. He promptly set up fellow sub James Maddison for the opener and sealed the points with a header soon afterwards.
Earlier, Nick Pope looked to have lifted Burnley out of the bottom three with four brilliant saves, only for Vardy to turn the tide as Leicester won away in the league for the first time since October.