制作饼干的英语作文可以按照以下步骤进行：

预热烤箱

Preheat the oven to 350°F.

准备烤盘

Line a baking sheet with parchment paper.

混合干性材料

In a large bowl, whisk together the flour, baking soda, and salt.

混合湿性材料

In a separate large mixing bowl, cream together the softened unsalted butter, granulated sugar, and packed brown sugar until smooth and creamy.

Beat in the eggs, one at a time, ensuring each is fully incorporated before adding the next.

Add the vanilla extract and mix well.

组合面团

Gradually beat in the dry ingredients into the wet ingredients until just combined.

成型饼干

Using a cookie scoop or a spoon, drop rounded tablespoons of dough onto the prepared baking sheet, spacing them about 2 inches apart to allow for spreading.

烘烤饼干

Bake the cookies for 10-12 minutes, or until the edges are golden brown.

冷却饼干

Let them cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.

通过以上步骤，你就可以完成饼干的制作。希望这个流程对你有所帮助!