Clement Kgothatso Ramawela, 25, would be back in court on May 23, court clerk Sechaba Mabena said on Thursday.
Ramawela, who remains in custody, was arrested on Saturday, March 8, the day of the crime.
He was believed to be a former employee at Annemarie van Zyl’s shop in Newton Street, Kempton Park, police spokesman Captain Jethro Mtshali said earlier.
A man entered the shop around 7.30am and stabbed Van Zyl several times. He fled with an undisclosed amount of money. The woman’s daughters, aged six and eight, were in the shop at the time.