Spending time together is so much easier when food is involved. For a toddler sitting in a highchair they get to feel part of the family, and it helps everyone with communication, including teenagers!
Try having everyone in the family (including adults!) answer simple questions like:
What was the best thing about your day?
What was the hardest thing about your day?
You could even add in an extra focus like:
Did you see God in anything you did today? Or Did you talk to God about anything today?