*If you're concerned about salmonella poisoning, use a pasteurized egg. These can be purchased, or you can make them at home (Google it).
If you don't have an ice cream maker, you could try freezing the blended ice cream mixture in ice trays, letting the cubes set out a bit to soften, blending them in a high-powered blender to soft-serve consistency, stirring in the cookie crumbs by hand, and freezing to the desired hardness.
Instead of making cookie crumbs, you can crumble up some of my
Pecan Pie Bars and stir them in instead!