Spray inside of slow cooker with nonstick cooking spray. In a medium mixing bowl, combine eggs, milk, butter, and yogurt, mix until well combined and set aside. In a separate bowl, combine cornstarch, cornmeal, and salt. Gradually add the cornmeal mixture into the egg and milk mix. Once combined, add the sweet corn and honey. Mix just until combined and pour into slow cooker. Cook on low for 3 to 4 hours or high for 2 to 2.5 hours.