1 1/2 cups all-purpose flour, (spooned and leveled)
1 teaspoon baking soda
1 teaspoon salt
1 cup (2 sticks) unsalted butter, room temperature
3/4 cup packed light-brown sugar
3/4 cup granulated sugar
2 large eggs
1 teaspoon vanilla extract
2 1/2 cups rolled oats
1 1/2 cups raisins
1 package (12 ounces) semi-sweet chocolate chips
Directions
Preheat oven to 375 degrees. In a medium bowl, whisk together flour, baking soda, and salt; set aside. With an electric mixer, cream butter and sugars until light and fluffy.
Add eggs and vanilla; beat until combined, scraping down sides of bowl as needed. Add flour mixture; beat until just combined. Add oats, raisins, and chocolate chips; beat until just combined.
Drop 32 heaping tablespoons of batter, about 1 1/2 inches apart, onto baking sheets. Bake, rotating sheets halfway through, until cookies have spread and are golden brown and soft to the touch, 10 to 12 minutes. Cool 5 minutes on sheets; transfer to a wire rack to cool completely.
If you prefer a crispier texture, bake the cookies at 350 degrees for 16 to 20 minutes.