I feed Tashi dry food (Evo), and if she starts getting bored of it, I'll cook up some liver, mashed yams, and peas, brown rice and feed her dry food mixed in with it. It's very rare that Tashi will get bored of her food, but I feed her a homecooked meal at least twice a week. I just make sure she's getting all her nutrients from her dry dog food and that's more of a "nutritional" treat.
If she's getting bored, maybe you could do something similar? Maybe even boil a liver, keep the juice and pour some onto her dry food with a little bit of chopped up liver?
I started home-cooking her meals because I had a nasty habit of handing her "a little bit" of whatever I was eating, and I realized that she's really small, and feeding her food with salt, lots of seasonings, probably was horrible for her. She seemed confused about why she wasn't allowed to eat my food anymore, so I started making her little meals I could give her once in a while that made her think she was eating people food. She gets really excited when she sees the tiny tupperwares that I keep her food in come out
