Want to bake but don’t want to create a mess in the kitchen? Look no further than Martha’s four impressively simple one-bowl desserts: starting with brown-butter coconut cashew blondies and then…skillet baked plum cake. You’ll love the single-serving size fudgy brownie sundaes so simple; they are a must have in every baker’s repertoire. And for a savory twist, Scottish oatcakes, best served with cheese or jam.