Preheat oven to 425 f
In a large pan, add oil and heat over medium-high.
Once heated, add diced onion and cook until translucent.
Next, add ground turkey and spices. Break apart ground turkey and stir frequently, until the turkey is fully cooked.
Once the meat is fully cooked, add the alfredo sauce to the pan. Continue to cook until the sauce mixture is VERY thick.
Slice the zucchini length-wise, I highly suggest using a cheese slicer. It slices them to the perfect thickness, with little effort. (See "How To Fork It Up," for more info.)
Layer sliced zucchini on the bottom of a large pyrex pan, make sure they are slightly overlapping each other.
Add the meat sauce mixture on top of the zucchini layer and ½ cup of sharp white cheddar cheese.
Add the rest sliced zucchini, slightly overlapping each other. Top with the rest of the cheese.
Put in the oven, cook for 20-25 minutes, or until cheese starts to brown.
Let cool, and dig in!