Two men raided a house in Langley Road, Langley, at 2.45pm on Tuesday after hitting the 42-year-old victim in the face.
They snatched jewellery and electrical goods before making a getaway in her car that was parked in the driveway.
The woman was treated at Wexham Park Hospital with bruises to her face.
Det Con Emma Mullenger said: "This was an understandably traumatic experience for the woman and I would like to reassure people that we are doing everything we can to find those responsible.
"We would like to hear from anyone who was in the vicinity at the time and saw any suspicious activity, or has any other information which may assist us with our investigation."
The men are described as Asian.
One was aged between 30 and 40 and of average build, and the other in his early twenties and slim.
They were wearing dark clothing.
Anyone with information can call police on the non-emergency number 101 or Crimestoppers anonymously on 0800 555 111.