This crusty bread makes a great sandwich base or burger bun. Martha made this recipe on episode 702 of Martha Bakes.
Make the dough: In the bowl of an electric mixer, whisk flour and salt to combine. Attach bowl to mixer fitted with a dough hook. In a glass measuring cup, whisk together water, yeast, and honey; let stand 5 minutes. Add eggs and whisk to combine. Add to flour mixture and knead on low speed until it forms a soft, stretchy dough, 6 to 8 minutes. If necessary, add more water, a tablespoon at a time. Add butter, 1 tablespoon at a time, until thoroughly incorporated, about 4 minutes. Transfer to a buttered bowl. Cover with plastic wrap, and let rise in a warm place until doubled in bulk, about 1 hour.
Punch down dough and remove from bowl. On a lightly floured surface, pat dough into a 14-by-12-inch rectangle. Fold dough into thirds like a business letter. Rotate dough 90 degrees on work surface and fold into thirds once more. Return dough to bowl, cover, and let rise in a warm place until doubled in bulk, about 1 hour.
Divide dough into 12 equal pieces and cover lightly with plastic wrap. On a lightly floured work surface, pat one piece of dough at a time into a 5-by-3-inch rectangle. With a long side facing you, fold dough into thirds as you would a business letter. With the edge of your hand, pat dough along length of seam to seal. Using your hands, roll dough into a 12-inch rope. Tie rope into a simple knot, leaving a bit of length at each end. To finish the knot, pull one end up and over and tuck it into the center. Take remaining end and pull it down and under, pushing it through the bottom of the knot and up into the center. Place on parchment-lined baking sheets, 3 inches apart. Repeat process with remaining pieces of dough. Let rise, covered, in a warm place until doubled in bulk, about 1 hour.
Make the topping: Preheat oven to 350 degrees. Lightly brush tops of rolls with egg wash and sprinkle with poppy seeds. Bake, rotating sheet pans between racks halfway through, until golden brown, 30 to 35 minutes. Transfer to a wire rack and let cool completely.