It was Wycombe's first home win of the season and leaves Bury at the foot of League Two.
With both teams battling the torrential rain Wycombe carved out the first chance after just two minutes. Sergio Torres, making his first start this season fed a precise pass behind the Bury defence, Tommy Mooney raced through but under pressure could only shoot at keeper Alan Fettis.
Wycombe continued to dominate the opening proceedings with most good moves going through veteran striker Mooney.
The longer the first half continued the more Bury struggled and Mooney almost returned the favour to Torres with a delicious 40-yard cross which carved the Bury defence in two, any touch from the Argentinian would have been enough but the ball just agonisingly missed his outreached boot.
The best chance of the half then fell to Will Antwi, whose towering header from a Chris Palmer corner was somehow cleared off the line after 35 minutes. Wycombe continued to huff and puff coming into half-time but Bury held strong despite not creating a chance of their own as yet.
With the sun now beaming down things seemed settled into a pattern in the second half as they continued to struggle.
The ever-threatening Mooney heading just wide from another Palmer corner after 53 minutes. Wycombe finally opened the scoring on 59 minutes, Easter raced on to a long ball which was well flicked on by Mooney and coolly slotted home.
Easter then got his second minutes later after another long ball and then lobbed the keeper well.
The home side were in cruise control from then on, Mooney dancing past two challenges and facing a delicate chip just over the helpless Fettis and the crossbar.
The pacy Easter then put the game beyond doubt on 84 minutes powerfully running down the right and lashing the ball across the keeper into the net.