Preheat oven to 375°F. Grease an 8-inch square baking dish.
In a large bowl, whisk together the pumpkin purée, maple syrup, egg, melted butter, nut butter, and vanilla until smooth.
1 cup pumpkin purée, 1 large egg, 2 tablespoons unsalted butter, 1 tablespoon almond butter, 1 teaspoon vanilla extract, ½ cup maple syrup
Stir in the milk until well combined.
1 cup milk
Fold in the oats, pecans, cinnamon, pumpkin pie spice, and baking powder. Let the mixture rest for 10 minutes.
2 cups old-fashioned rolled oats, 1 teaspoon ground cinnamon, 1 teaspoon pumpkin pie spice, 1 teaspoon baking powder, 1 cup chopped pecans
Spread evenly into the prepared baking dish. Bake for 30–35 minutes, or until the edges are golden brown and the center is set.
Let it cool for 10 minutes before slicing. Serve warm with toppings like maple syrup, extra pecans, or whipped cream.