Creating Oatmeal Apple Bread is simple if you follow these easy steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan with cooking spray or butter.
2. Combine Dry Ingredients: In a large bowl, mix together the rolled oats, flour, baking soda, baking powder, salt, and ground cinnamon.
3. Mix Sugars: In another bowl, whisk together the granulated sugar, brown sugar, and eggs until well combined.
4. Add Wet Ingredients: Pour in the vegetable oil, buttermilk, and vanilla extract into the sugar-egg mixture. Stir until smooth.
5. Combine Mixtures: Gradually add the dry ingredients to the wet mixture, stirring gently until just combined. Be careful not to overmix.
6. Fold in Apples and Nuts: Gently fold in the diced apples and chopped nuts (if using) until evenly distributed throughout the batter.
7. Pour into Pan: Transfer the batter to the prepared loaf pan, smoothing the top with a spatula.
8. Bake: Place the loaf pan in the preheated oven and bake for 50-55 minutes, or until a toothpick inserted into the center comes out clean.
9. Cool: Remove the bread from the oven and let it cool in the pan for about 10-15 minutes. Then, transfer it to a wire rack to cool completely.
10. Slice and Enjoy: Once cooled, slice the Oatmeal Apple Bread and serve it fresh.