I always let my daughter help with this part because she loves pushing the buttons. Preheat the oven to 375°F and line a loaf pan with parchment paper so nothing sticks later.
In a large bowl, gently mix the [ground chicken], [Italian breadcrumbs], [parmesan cheese], [milk], [eggs], [garlic], [Italian seasoning], [onion powder], [salt], [black pepper], and [parsley]. I remind my daughter not to overmix because gentle hands make the juiciest meatloaf.
Transfer the mixture into the prepared pan and press it down lightly. We always smooth the top together and laugh about making it look like a little loaf of bread.
Bake the meatloaf for 30 minutes. This helps it set before adding the topping. While it bakes, my daughter usually sets the table and sneaks a smell test.
In a small bowl, mix the [butter], [garlic], [parmesan cheese], [panko breadcrumbs], and [parsley]. This is our favorite step because we know the crispy top is coming.
Carefully spread the topping over the meatloaf and return it to the oven for 25 minutes, or until the center reaches 165°F. That golden crust is always worth the wait.
Let the meatloaf rest for 10 minutes before slicing. I tell my daughter this is the hardest step, but it keeps everything juicy and perfect.