Drain and transfer to a plate.
Heat oil in a large skillet over medium heat.
Add the turkey mixture and mix well.
Spread 1 cup marinara in the bottom of a 9-by-13-inch baking dish.
Top the filled shells with the remaining 1 cup sauce and sprinkle with the remaining 1/4 cup Parmesan.
Cover the baking dish with foil and bake until the marinara is bubbly, about 30 minutes.
Uncover and bake for 10 minutes more.
Let the shells rest for 10 minutes, then sprinkle with basil, if desired, and serve.
Tips
To make ahead: Prepare through Step 5.
Wrap baking dish tightly with plastic wrap, then foil, and freeze for up to 1 month.
Remove plastic wrap and bake frozen shells, covered, until marinara is bubbly, 45 to 50 minutes.
Uncover and bake for 10 minutes more.
Or, thaw shells in refrigerator overnight and bake as directed in Step 6.
- Daily Values (DVs) are the recommended amounts of nutrients to consume each day.
(-) Information is not currently available for this nutrient.
