I mentioned samosas, but maybe Jamaican patties would work better. A friend of mine is a chef. She recently posted pix on FB of a savoury breakfast pastry with beet greens, feta, pine nuts, and an egg baked into the top sprinkled with Maldon salt. That might work, but I don't think those would be do ahead with the egg.
May you live as long as you wish and love as long as you live.
Robert A. Heinlein