Proving once again that great things often come in small packages, KitchenAid is introducing three new countertop ovens that have more in common with its high- performance wall ovens than traditional toaster ovens. The new collection, making its debut at the International Home + Housewares Show, is scheduled for availability in late summer. It includes a model with traditional cooking capabilities, a second that adds convection and a third adding both convection and steam-assisted cooking…