This is a recipe I stumbled upon once and I've made it a couple of times. Let me say that I only use this recipe as inspiration. There's a lot about it that I don't do, such as I omit mushrooms, add a few other veggies not listed, and I don't make it in individual ramekins. However, I like the essence of this recipe and once I truly get a good flow of my own system down, I'll change this post up to have my own method.
Sweet potato chicken pot pie