Sourdough Oatmeal Cookies

Name: Sourdough Oatmeal Cookies
Prep time: 15 min
Cook time: 8 min
Total time: 23 min
Cuisine: American
Ingredients: 1 1/2 cups (7.5 oz, 210g) all purpose flour; 1 teaspoon baking soda; 1 teaspoon cinnamon; 1/2 teaspoon salt; 2 sticks (8 oz, 224g) unsalted butter, room temperature but still firm; 1 cup (8 oz, 224g) light brown sugar, packed; 1/2 cup (4 oz, 112g) granulated sugar; 2 large eggs; 1 cup (8 oz, 224g) sourdough discard; 2 teaspoons vanilla extract; 3 cups (10 oz, 280g) old-fashioned rolled oats; 2 cups (8 oz, 224g) confectioner's sugar; 1/4 cup (2 oz, 60ml) fresh lemon juice