In a mixing bowl, combine flour, parsley, chives, pepper, and salt. Whisk to combine.
In a separate bowl, combine eggs, and milk, whisking until combined, then gradually add flour mixture into the eggs and milk, followed by 3 tablespoons of melted, unsalted butter, lightly mixing until just combined. The batter will be quite runny, a bit runnier than heavy cream.
Preheat oven to 425F.
Brush two 11 x 7 x 2 inch pans each with a tablespoon of melted butter.
Once buttered, fill pan about half way with batter.
Bake about 35-45 minutes, until popover loaf has puffed up, and become golden brown.
Serve warm.
Recipe by The Adventures of Bob & Shan at https://theadventuresofbobandshan.com/black-pepper-chive-popover-bread/