How to effectively combine Cooked food with dry regular food?

I have a 5-year old Chihuahua that I adopted from a foster mom. When I got her, the foster mom told me that she was on Blue Buffalo Life Protection Program. So I bought a big package. I wanted to give my dog natural, cooked food, so I started to give her first thing in the morning chicken or meat mixed with one veggie or rice (i.e. potato, sweet potato, squash, carrots). And she loves those combinations; however, now, she hardly eats her dry food (Blue Buffalo) at night.

I also give her a few treats (high value) during the day, mostly dry treats.

Any suggestions on how to get my dog eating normal dry food again at night? I still want to give her cooked meat with a veggie early in the morning.

Thank you!