Sara Foster takes the expression "easy as pie" seriously. New and experienced bakers alike will thrill to Foster's encouraging approach to tossing together the most delicious made-from-scratch pies. A southern kitchen is unimaginable without pie, says Foster, who grew up on a farm in Tennessee, where many a meal ended with a bubbling pie or cobbler straight from the oven. "There were many pie makers in my family, and no one ever needed a recipe—they just mixed, rolled out pastry, and baked to perfection," she writes. Surrounded from an early age by her pie-baking mother, grandmothers,...