"I loved every minute on Wednesday," said Spearing about partnering Steven Gerrard against St Gallen.
"Any chance I get I've got to impress. I want to show Stevie that I am capable of playing alongside him - and I need to show that to Rafa Benitez as well.
"As soon as the offer of a new deal came I wanted to get pen to paper. This is the club where I want to be and this is where I want to play my football in the years to come.
"I want to make the step up as soon as possible. I've been in the reserves for a few years so I need to push on."