Homemade Bun Hamburger

In a large bowl, combine flour, yeast, sugar, and salt. Add the lukewarm milk and melted butter, then knead the dough by hand or with a stand mixer for about 8-10 minutes until smooth and elastic. Cover the bowl with a kitchen towel and let it rise in a warm place for 60-90 minutes, or until doubled in size.

Once the dough has risen, turn it out onto a lightly floured surface and divide it into 4 equal portions. Shape them into balls, then flatten them slightly. Place them on a baking sheet lined with parchment paper, cover again, and let rise for another 30-45 minutes. Preheat your oven to 190°C (375°F). Brush the tops of the buns with beaten egg, sprinkle with sesame seeds, and bake for 15-20 minutes, or until golden brown. Let them cool on a wire rack.

Season the ground beef with salt and pepper to taste. Do not overmix! Divide it into 4 equal portions and form them into patties about 1.5-2 cm (0.6-0.8 inches) thick. Press a small indentation in the center of each patty with your thumb to prevent them from bulging during cooking.

Cook the patties in a skillet or on a grill over medium-high heat for 3-5 minutes per side, depending on your desired doneness. During the last minute, place a slice of cheddar cheese on each patty and let it melt. Slice the cooled buns in half and toast the cut sides in a dry pan or on the grill. Spread mayonnaise on the bottom bun, then layer with lettuce, tomato, onion, pickles, and the cheesy beef patty. Top with ketchup and mustard, then place the top bun. Serve immediately!