Choco-chip cookies and ice cream would be classified as :
Heterogeneous mixture
We know, if a mixture exhibits different properties in different parts, that mixture is called heterogeneous mixture. In the case of choco-chip cookies and ice cream, the composition is not uniform throughout and has different properties.
On the other hand, if a mixture exhibits the same property throughout, that mixture is called a homogeneous mixture. For example, lemonade.