In a large microwave-safe mixing bowl, combine ½ cup butter (cut into pieces) and 1¾ cups whole milk.
Microwave in 30-second intervals, whisking after each interval, until the butter is completely melted and combined with the milk. Stir in 1 teaspoon vanilla extract and allow the mixture to cool slightly.
Once cooled, whisk in 2 large eggs until fully incorporated. Add 2 cups all-purpose flour, 2 tablespoons granulated sugar, 4 teaspoons baking powder, and ½ teaspoon salt.
Stir just until combined. The batter will still have a few lumps. Do not overmix. Let the batter rest for 5 minutes.
Preheat a waffle iron while the batter is resting. Fold 1 cup semi-sweet chocolate chips into the batter. Pour the appropriate amount of batter into the hot waffle iron and cook according to your waffle maker's instructions until the waffles are golden brown. Continue this process until all the batter is used.
Serve the waffles warmed, topped with your favorite waffle toppings and enjoy!
Notes
This recipe should make 4-6 large Waffles. Refrigerate the leftover waffles in an airtight container or ziplock bag for up to 5 days. If the batter is too thick, gradually add in more milk until the batter is a thinner consistency.