Make the cookie dough:

In a mixing bowl, beat the softened butter, brown sugar, and granulated sugar together until creamy. Add the vanilla extract and mix well. Gradually add the flour and salt, mixing until combined. Fold in the mini chocolate chips.

Form the truffles:

Scoop out small portions of the cookie dough and roll them into balls, about 1 inch in diameter. Place the balls on a baking sheet lined with parchment paper. Refrigerate for about 30 minutes to firm up.

Prepare the chocolate coating:

In a microwave-safe bowl, combine the chopped milk chocolate and vegetable oil. Microwave in 30-second intervals, stirring in between, until the chocolate is fully melted and smooth.

Coat the truffles:

Dip each chilled cookie dough ball into the melted chocolate, ensuring they are fully coated. Use a fork to lift them out and let any excess chocolate drip off. Return the coated truffles to the parchment-lined baking sheet.

Chill and serve:

Refrigerate the truffles for about 30 minutes until the chocolate is set. Enjoy your delicious cookie dough truffles!