Preheat oven to 425 degrees. Line a baking sheet with parchment paper.: The warm oven smell hits quickly as it reaches 425 degrees , and that preheated environment is what gives the scones an immediate lift. I always let the oven fully reach temperature before sliding the pan in, because an oven that is even a few degrees cool can yield flatter scones. A common mistake is placing scones into a not fully heated oven, which delays rising and leads to dense results. Use a rimmed baking sheet with parchment paper to prevent sticking and allow the bottoms to brown evenly.
Place flour, sugar, baking powder, and salt in a food processor and process until blended evenly.: You will notice a faint sweet aroma as the flour and sugar whirl together, and the mixture should look uniform and powdery when done. This step ensures even distribution of the baking powder and salt , which is critical for consistent rise and flavor. A frequent error is under-mixing dry ingredients, which can cause uneven pockets of leavening or salt. Processing for just a few pulses avoids warming the flour and keeps the mixture cool.
Cut butter into 1/2-inch cubes and scatter on top of flour mixture. Pulse about 15 to 20 times, until mixture is crumbly.: As the cold butter is pulsed, you will see the mixture transition into coarse crumbs with pea sized bits of butter still visible, which is ideal. Those visible bits are what create flakiness as they melt and produce steam in the oven. Overprocessing is a pitfall because it can fully incorporate the butter , removing the little pockets needed for lift. Aim for a crumbly texture, not a paste, and keep the bowl cool to preserve the shape of the butter .
Place 1 1/2 cups heavy cream in a glass measuring cup and add vanilla and almond extracts.: The aroma of the vanilla extract and almond extract blooming into the heavy cream is delightful and sets the flavor baseline for the dough. Stirring gently combines the extracts into a silky pale liquid. If you add extracts to warm liquid instead of cold, their volatile aromatics can evaporate, so I always mix them into cool heavy cream . Measuring precisely here helps keep the balance between floral and creamy notes.
With food processor running, gradually add cream mixture through the feed tube. If a dough has formed, remove from food processor and place on a lightly floured surface. If not, add cream, 1 tablespoon at a time until a dough forms.: As the heavy cream is added, you will hear the texture change from dusty to a cohesive mass, and you may smell the slightly sweet scent of the dairy. The goal is a dough that holds together when pinched but is not soggy. Adding too much heavy cream at once can yield a wet, sticky dough that is hard to shape; if that happens, dust with a touch of flour to correct. Working quickly and pulsing in increments keeps the mixture cool and manageable.
Knead strawberries into dough, handling the dough as little as possible. Pat into a 3/4-inch thick disc and cut into 8 wedges. Place on prepared baking sheet.: When you fold in the strawberries , be gentle to avoid bruising and releasing too much juice, which can make the dough heavy. The feel should be slightly tacky, studded with bright bits of berry. Pat the dough into a uniform 3/4 inch disc so the wedges bake evenly; you want a firm hand rather than vigorous kneading. Overworking is the classic mistake here, as it develops excess gluten and toughens the scones. Arrange the eight wedges with little space between them so they support each other while rising.
Bake for 10 to 12 minutes or until just barely light golden brown and no longer doughy.: As the scones bake, you will see edges turn a soft golden hue and the tops set while a warm, sweet aroma fills the kitchen. The sound is subtle, a quiet sizzle from the butter and cream as they transform. Remove when the centers are set and the color is pale gold to preserve tenderness; extended baking causes dryness. A common error is waiting for deep browning, which produces crispness at the expense of a soft interior. Let them cool briefly on the sheet so they finish setting without losing moisture.
In a small bowl, whisk together powdered sugar, heavy cream, and vanilla to make glaze.: The powdered sugar dissolves into the heavy cream creating a glossy glaze, and the scent of vanilla lifts the sweetness. Adjusting the additional heavy cream a spoonful at a time lets you control thickness. If the glaze is too thin it will run off, if too thick it will clump; a smooth, ribbon like pour is the target. Avoid over whisking which can introduce air and make the glaze look frothy instead of shiny.
Drizzle on scones. Best eaten warm.: When you drizzle the glaze over warm scones, it sets into a delicate sheen and the surface sparkles slightly. The contrast between the warm crumb and the cool glaze is delightful on the first bite. Serve shortly after glazing for the best texture, because sitting too long can soften the crisp edges. Resist the urge to stack glazed scones while still warm, as the glaze can stick and mar the finish.