Bring large pot of salted water to boil

Preheat oven to 350 degrees F

In large skillet, heat oil on medium heat and add garlic

Once garlic is fragrant, add onion and cook until translucent, only a few minutes

Add ground turkey, cooking for a few minutes before adding parsley, chilli powder and parmesan cheese and toss to coat

Meanwhile, if your water is boiling, add shells and cook according to the directions on the package

Roughly chop spinach and add to the skillet, stirring in with the turkey

Add 1 1/2 cups crushed tomatoes to the skillet, stir and continue cooking for about 20 minutes and remove from heat

Once your shells are cooked, strain them and run cold water over them until they are cool enough to handle

Spoon some sauce onto the bottom of a 13x9 casserole dish

One by one, fill each shell with the turkey mixture and place turkey side up in the dish

Cover with sauce, and use extra crushed tomatoes if you need more coverage

Spread mozzarella cheese over top of shells

Sprinkle with some dried basil

Bake in the oven for 20 minutes

BROIL for an additional 5-10 minutes to brown the cheese