Cut and wash cauliflower and separate into florets. Put cauliflower in the bottom of a lightly greased slow cooker.
Place turkey on top of cauliflower.
Pour chicken broth over the top of the turkey.
Rub 2 teaspoons of minced garlic into the top of the turkey.
Cook on high 4-5 hours or low for 7-8 hours.
Remove turkey to a cutting board. Cover loosely with foil and let stand for 10 minutes while you work on the next step.
Drain liquid into a glass measuring cup and set aside to create gravy.
Use a potato masher or blender to make the cauliflower creamy. Add milk, butter, pepper and grated parmesan cheese. Keep warm in the crockpot on low.
In a small saucepan bring the liquid you drained from the slow cooker to a boil. Combine cornstarch with cold water. Whisk the cornstarch into the liquid in the saucepan until combined and add pepper. Once the gravy has thickened, you’re ready to slice the turkey and serve your meal!