Chicken Enchilada Zucchini Boats

DELICIOUS! These were a BIG hit with my husband. Super good and easy to make. Will be in the rotation. Yes the Ancho chili powder makes a difference.

Ingredients

2 cups cooked and shredded chicken (from about 1 lb)
4 medium zucchini (2 1/2 lbs), sliced in half through length*
1 1/2 Tbsp olive oil
1/2 cup finely chopped yellow onion (be sure they are chopped fine or they won't cook through)
2 cloves garlic
1 (15 oz) tomato sauce
1 Tbsp ancho chili powder
1 Tbsp chili powder
1 tsp ground cumin
1/2 tsp paprika
2/3 cup water
1 1/2 tsp cornstarch
2/3 cup frozen corn
1 1/4 cups shredded Mexican blend cheese
For serving: diced Roma tomatoes, chopped cilantro, chopped yellow onion (optional), light sour cream (optional)