One-Bowl Oatmeal Cookies - Baking Bliss

Ingredients

• ½ cup unsalted butter, softened
• ½ cup granulated sugar
• ½ cup brown sugar
• 1 large egg
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour
• 1 teaspoon baking soda
• ½ teaspoon ground cinnamon
• ¼ teaspoon salt
• 1 ½ cups old-fashioned oats
• ½ cup raisins or chocolate chips (optional)