1-First Step: Prep the Apples Wash 4-6 apples under cool water, then pat completely dry with paper towels. Excess moisture causes caramel to slide off. Remove stems and insert sturdy wooden sticks into the top core. Chill apples in fridge for 30 minutes. This step ensures even coating.

2-Second Step: Gather Tools and Mise en Place Line a baking sheet with parchment paper and lightly grease with butter. Have a candy thermometer ready. Measure all ingredients: 1 cup butter, 2 cups brown sugar, 1 cup corn syrup, 1 can sweetened condensed milk, 1 tsp vanilla. Work in a spacious area for safe dipping.

3-Third Step: Cook the Caramel In a heavy saucepan over medium heat, melt 1 cup butter. Stir in 2 cups brown sugar, 1 cup corn syrup, and 1 can sweetened condensed milk. Bring to gentle boil, stirring constantly to avoid scorching. Clip candy thermometer to side. Cook until 248°F (firm-ball stage), about 10-15 minutes. Color turns golden amber. Add 1 tsp vanilla off heat. Remove from burner.

4-Fourth Step: Cool and Dip Let caramel cool to 200°F, about 5 minutes, for better adhesion. Hold apple by stick, dip fully into caramel, swirling slowly for even coverage. Let excess drip back into pot. Roll in chopped nuts or toppings immediately if desired, like for caramel apples with nuts.

5-Fifth Step: Set and Chill Place dipped apples on prepared sheet. Refrigerate 1 hour until firm. Avoid touching while setting. For glossy finish, work quickly. If caramel thickens, gently reheat over low.