Sausage Buns with Fennel

• A knob of butter
• 1 red onion, finely diced
• 1 smallish fennel bulb, cored and diced<

In my book Home Made Winter, I told you the story of how my mother, Mariëtte, would bake a whole batch of sausage buns at the beginning of each winter break. We would eat them throughout the holidays: for breakfast, as a snack, for lunch, a lazy dinner, or while lounging on the sofa, watching a Christmas movie on TV. Now, several years later, her recipe has traveled the globe, and people