Follow these steps to create your Warm Skillet Cinnamon Apples:

1. Prepare the Apples: Peel, core, and slice the apples into thin wedges.
2. Melt the Butter: In a large skillet, melt the unsalted butter over medium heat.
3. Add Apples: Once the butter is melted, add the apple slices to the skillet.
4. Combine Sugar and Spices: In a small bowl, mix the brown sugar, cinnamon, nutmeg, and salt.
5. Add Sugar Mixture: Sprinkle the sugar and spice mixture over the apples in the skillet.
6. Toss to Coat: Gently toss the apples to coat them evenly with the sugar mixture.
7. Cook the Apples: Cook the apples for about 10-15 minutes, stirring occasionally, until they are tender and caramelized.
8. Add Vanilla and Lemon Juice: Stir in the vanilla extract and lemon juice during the last minute of cooking.
9. Serve Warm: Remove from heat and serve immediately, garnished with chopped nuts or raisins if desired.

These straightforward steps will guide you in preparing this incredible dish effortlessly.