Add coconut milk, soy sauce, hoisin sauce, brown sugar, chili sauce, sesame oil, powdered ginger & garlic powder to your slow cooker. Whisk together until smooth. Set slow cooker off to the side.
In a large skillet, heat 1 TBS olive oil. Add ground turkey and onion and cook until turkey is browned on all sides (about 10 minutes).
Add the turkey/onion mixture to the crock pot and stir until it's evenly distributed in the sauce.
Add diced bell peppers (or any color of your choosing) and edamame to the crockpot and stir until everything is evenly distributed.
Cook on high for at least 2 hours, or low for at least 4 hours, until the veggies are cooked to your liking.
To thicken the sauce: Mix together cornstarch and water, add to crock pot and cook on high for 30-60 minutes, with the lid slightly ajar.
Once veggies are cooked to your liking and sauce is thick, serve over rice or noodles!