I believe I’ve found the best dish in Denver to eat when you’re three sheets to the wind, namely this restaurant’s butter-soaked, crisp-edged, pan-fried spaetzle sheeted with cheese that mimics Whiz.

America’s Test Kitchen’s newest cookbook, “Gatherings, Casual-Fancy Meals to Share,” lands on Sept. 19, just in time to inspire celebrations of every variety. The book opens with a chapter of ...