Wash the strawberries under cool water and gently pat them dry with a paper towel, ensuring they are completely dry for the best chocolate coating.
Line a baking sheet with parchment paper to place the dipped strawberries on later.
In a double boiler or microwave-safe bowl, melt the semi-sweet chocolate chips and coconut oil (if using) together, heating in 30-second intervals, stirring in between, until completely melted and smooth.
Hold a strawberry by the green stem or use a toothpick, and dip it into the melted chocolate, swirling it around to ensure it's fully coated, allowing excess chocolate to drip off.
Place the dipped strawberry onto the prepared baking sheet and repeat this process with all strawberries.
If desired, sprinkle chopped nuts or sprinkles on top of the chocolate-coated strawberries before the chocolate hardens.
Once all strawberries are dipped, place the baking sheet in the refrigerator to let the chocolate set for about 15-20 minutes.
Serve chilled or at room temperature and enjoy your delicious chocolate dipped strawberries!