Oatmeal raisin drop cookies

Ingredients

• 1/2 cup (1 stick) butter
• 1/2 cup firmly packed light brown sugar (100g)
• 1 egg
• 3/4 teaspoon vanilla extract
• 3/4 cup all-purpose flour
• 1/2 teaspoon baking soda
• 1/4 teaspoon baking powder
• 1 1/2 teaspoon ground cinnamon
• 1/4 teaspoon salt
• 1 1/2 cups rolled oats
• 1/2-3/4 raisins (depending on your taste)