The St. Stephen's Church in Mollem was built in the period 1754-1758 by the abbey of Affligem and is built in Baroque style, with a door frame in Rococo style. The church was consecrated on June 28, 1760 by Archpriest De Bruyne of the deanery in Aalst and solemnly consecrated on June 16, 1776 by Archbishop Johannes van Frankenberg, who dedicated the high altar.
The church is not the first church in Mollem. In the 12th century there was certainly a parish, which we can deduce from a charter of 1126 in which the bishop of Cambrai handed over the “Altare de Molinhem” to the abbey of Affligem. The previous church was a Romanesque building with a crossing tower on the transept (here is a sketch of rediscovered ed.), modeled on Asse, and a vicus church, in other words built by the villagers themselves and not by a lord.
In 1753 it was decided to build a new church, because the vault was torn in many places. This new church was built by the abbey of Affligem between 1754 and 1758 at the insistence of the faithful.
During the First World War, on September 4, 1914, the tower was blown up by the Germans, while the then pastor De Munter was locked up in the church by the occupiers. They wanted him as a witness that they only wanted to destroy the tower. After the war, the tower was restored with donations from the parishioners.
The organ of St. Stephen's Church is listed and dates from the middle of the 18th century and was purchased from the church of Neerlinter. Judging by the construction, it was built by Jan Bremser from Mechelen. In 1759 it was renovated by Eg.Le Blas from Brussels and restored in the early 19th century by Charles Verbeke. In 1963 it was serviced, presumably by Stevens from Duffel.