Muffin Day is observed in Sweden every May 27 and celebrates muffins as part of the country's fika culture, which is a social tradition involving coffee breaks with baked goods. The term "muffin" in Sweden typically refers to American-style muffins, which gained popularity in the late 1980s and 1990s, alongside traditional pastries. The origins of Muffin Day are unclear, but it has been recognized since at least 2012, with various bakeries, cafés, and food bloggers participating in the celebration. On this day, people buy muffins from bakeries, bake at home, and share recipes and photos online, often featuring seasonal flavors. Swedish food and baking sites promote special muffin recipes, and bakeries prepare unique offers to mark the occasion.