Mix all the ingredients in a deep bowl. Knead until you get a dough-like consistency. When the dough is flat, open it half cm thick on the ground. Divide with a cookie cutter and oil. Arrange on a paper-lined baking tray and sprinkle poppy on them. Bake in a preheated oven at 175 degrees. Serve when cooled down.
125 g butter (room temperature)
Half a teaspoon of oil
1 tablespoon of granulated sugar
1 teaspoon of poppy
1 tablespoon of vinegar
1 teaspoon of salt
1 packet of baking powder