Creating Soft and Chewy Oatmeal Cookies is an easy process if you follow these concise steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.
2. Cream Butter and Sugars: In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy.
3. Add Eggs and Vanilla: Beat in the eggs one at a time, followed by the vanilla extract. Mix until well combined.
4. Combine Dry Ingredients: In another bowl, whisk together the flour, baking soda, cinnamon, and salt. Gradually add this mixture to the wet ingredients, stirring until just combined.
5. Add Oats and Mix-ins: Fold in the rolled oats and your choice of chocolate chips or raisins and nuts (if using).
6. Scoop Dough: Use a cookie scoop or spoon to drop dough onto the prepared baking sheets, approximately 2 inches apart.
7. Bake: Bake in the preheated oven for 10-12 minutes, or until the edges are golden but the centers appear slightly underbaked. Remove from the oven and let cool on the baking sheets for a few minutes before transferring to a wire rack.

With these easy-to-follow instructions, you’ll soon have a delicious batch of oatmeal cookies ready to enjoy!