The church is built of boulders with stone dressings; these are mixed fabric throughout. It has, at least in part, a round, walled site. There is a chancel, an aisled and clerestoried nave, S porch and W tower. In origin it is a 12thc. building (see SE corner of nave). There is an unusual free-standing pillar piscina in the chancel. The N arcade appears not to have any Romanesque work. It has medieval decoration identified by David Park, 'comprising chevrons on the arches and a just-discernible head on the E respond' (Pevsner and Neave, p. 395).

In 1066 Morcar had the manor of Easington. Drew de Bevrere had it in 1086. It went to the Aumale fee and passed with Burstwick [Burstall]. The church existed in 1115 when it was in the gift to Aumale abbey. The English estates of Aumale abbey were superintended by Burstwick Priory (in Skeffling, on the Humber behind Sunk Island) (VCH). The N doorway is said to have been brought at the Dissolution from Burstwick Priory (church guide).

The mouldings on the porch at Conisbrough might be compared to the N doorway at Easington, but even so this at Easington seems more 'advanced'. The nailhead is also sharp and confident, compared to the earlier usage at Reighton.