Heat the butter, just until mostly melted with a few soft lumps remaining. Stir to finish melting from the residual heat.
Mix the melted butter with the gräddfil (or your alternative choice). In a large bowl or stand mixer, add 160 g (1⅓ cups) of the flour, the dried yeast, and the salt. Stir to combine.
Pour the butter and gräddfil mixture into the dry ingredients.
Cover the bowl with a clean towel or plastic wrap and leave it to rise in a warm spot for about 45 minutes, or until doubled in size.
Preheat the oven to 175℃ (350F).
Turn the dough out onto a lightly floured surface.
Divide it into four equal pieces - they should weigh about 75 g (2.6 oz) each.
Roll each one into a circle roughly 10 cm (4 inches) in diameter. Don’t worry if they’re not perfectly round; a rustic look is completely fine.
Place the rounds on a lined baking tray, leaving space between each one. Prick all over with a fork to prevent bubbles and give that traditional look.
Cover loosely and let the buns rest for another 30 minutes.
Bake in the preheated oven for around 15–17 minutes. They’re ready when the bottoms are lightly browned and sound hollow when tapped.
Allow to cool on a wire rack, then top with your favourite toppings. Enjoy!