Preheat oven to 350°F. Line a baking sheet with parchment paper.
In a large bowl, cream butter and sugar by beating for 2-3 minutes. Add the eggs and vanilla, then beat again, stopping to scrape the bottom and sides of the bowl.
1 cup salted butter, 1 1/4 cups granulated sugar, 3 large eggs, 2 teaspoons vanilla extract
Add the flour, baking powder, baking soda, salt, and cinnamon. Mix until combined, scraping the bottom and sides of the bowl.
4 cups all-purpose flour, 1 teaspoon baking powder, 1 teaspoon baking soda, 1 teaspoon salt, 1 teaspoon ground cinnamon
Scoop large scoops of cookie dough onto the prepared baking sheet, spacing them a couple inches apart. Flatten them slightly by pressing down on the top of each bowl with your hand or a flat-bottomed cup until they are approximately 3/4-inch thick.
Bake for 10-12 minutes until set, but do not overbake. Cool completely.