Step 1

Preheat oven to 300°. Whisk flour, oats, baking soda, and salt in a medium bowl to combine. Using an electric mixer on medium-high speed, beat butter and sugar until light and fluffy, about 3 minutes. Beat in milk and honey. Turn off mixer and add dry ingredients; mix in with a rubber spatula.

Step 2

Spoon heaping tablespoonfuls of dough onto 2 parchment-lined baking sheets, pressing down lightly to flatten and spacing 1½" apart. Bake cookies until golden brown, 25–30 minutes (they will crisp up more as they cool). Transfer baking sheets to a wire rack and let cool.

Step 3

Do Ahead: Cookies can be baked 1 week ahead. Store airtight at room temperature.