1- Creating brown butter pumpkin oatmeal cookies is straightforward and fun, even if you’re new to baking. Start by preheating your oven to 350°F (175°C) and lining baking sheets with parchment paper to keep things tidy. This step ensures your cookies bake evenly and lift off easily once done.

2- Next, blot the pumpkin puree with paper towels until about 1 cup remains, then set it aside to reduce moisture for a chewier result. Brown all the butter in a light-colored skillet over medium heat, stirring until it foams and forms light brown specks with a nutty aroma reserve 1 cup for the dough and the rest for the glaze. In a large bowl, whisk together the 2 cups old-fashioned whole rolled oats, 1 and 2/3 cups all-purpose flour, 1 teaspoon baking soda, 1/2 teaspoon salt, 1 and 1/2 teaspoons ground cinnamon, and 2 teaspoons pumpkin pie spice to blend the dry ingredients well.

3- In another bowl, whisk the reserved 1 cup of brown butter with 1 cup granulated sugar and 2/3 cup packed light or dark brown sugar until smooth. Add 1 egg yolk at room temperature and 2 teaspoons pure vanilla extract, then mix in the blotted pumpkin puree for a rich base. Stir the dry ingredients into the wet ones to form a thick, sticky dough, then scoop about 2 tablespoons per cookie onto the baking sheets, spacing them 3 inches apart and slightly flattening each ball.

4- Bake for 14-15 minutes until the edges are lightly browned and set, then let the cookies cool on the sheets for 10 minutes before moving to racks. For the glaze, warm the reserved brown butter if needed, and whisk in 1 and 1/2 cups confectioners’ sugar, 3 tablespoons milk, and 1/4 teaspoon pure vanilla extract until smooth. Dip the cooled cookies into the glaze and sprinkle with pumpkin pie spice if desired, letting it set at room temperature. This method turns out 24 delicious pumpkin oatmeal cookies with warm spices in about 1 hour and 10 minutes total.