I agree with the above about putting a washable matt or a cut out square of lino especially for under her bowl down under the bowl or where your dog tends to place the food in order to eat it.

Mine does it with certain food, say if there are some potatoes left over from dinner, she loves those so I'll stick a couple in with her food and she tends to do the same thing with those or a large chunk of meat that takes a bit more chewing but something that helped to cut down on it is one of those food and water dish holders you can buy where you can adjust what height they are at so that the dog doesn't have to put it's mouth down to floor level. My elderly dog is much better eating this way and less likely to take stuff out of the bowl. These are also useful for larger dogs who have a hard time splaying their front legs to get down to floor level to eat.