I made Jalapeño and cheddar scones from The Savory Baker: 150 Creative Recipes, from Classic to Modern and it also ran in Cook's Country Magazine, Dec 2021/Jan 2022 (Jalapeño-cheddar scones), and I ran into problems. I would welcome the feedback of more experienced bakers. This was my first time making scones.
Recipe called for 15-17 minutes of baking on the middle oven rack at 425ºF, turning the sheet at the halfway point. At which point, you brush the scones with a honey-butter, and bake for an additional 3-5 minutes until golden brown. I baked for 8 minutes and turned, at that point, the scones were leaking butter. Perhaps this is normal for scones, but I don't know. I baked for 9 minutes and removed from the oven to do the glazing. The scones were still quite light, looking undercooked. I glazed them anyway, but moved the oven rack up and returned them to the oven. It took about 10 minutes for them to turn golden.
The scones taste fine, but they don't have a very light texture, and there were the oddities of the cooking time versus the recipe.
I'm confident that all the ingredient measures were correct. Butter and cheese were both well chilled when the dough was put together. Jalapeño peppers were room temperature, coming from a freshly opened jar, and were well drained. The dough seemed to have an appropriate texuture based on videos I've watched online. I did chill the dough after forming and placing on the baking sheet. Recipe called for at least 30 minutes, I chilled it for 1 hour.
I verified the oven temperature was correctly set multiple times and after finishing baking even verifed the temperture with an oven thermometer and it was spot on -- oven set at 425ºF, the thermometer read exactly 425ºF. It had been years since I'd tested the oven's accuracy and I was pleased to find it still accurate, and the oven is 12 years old (General Electric Adora gas range for the record). And I live at essentially sea level for how altitude affects things.
Could bad baking powder explain what happened? I don't bake often and it could be a culprit.