Pumpkin chocolate chip cookies

Ingredients

• 2 cups all-purpose flour
• 1 tsp baking soda
• 1 tsp fine sea salt
• 1 tsp pumpkin pie spice
• 1 stick of butter (1/2 cup) (softened, room temperature)
• 1/2 cup light brown sugar
• 3/4 cup white granulated sugar
• 1/2 cup pumpkin puree
• 1 tbsp milk
• 1 1/2 tsp vanilla extract
• 1 large egg
• 1 1/2 cups milk chocolate chips
• 1/2 cup chopped walnuts (optional)