In the bowl of a stand mixer fitted with the paddle attachment, cream together butter and sugar for 2 minutes until light and fluffy. Then add in the eggs, one at a time and incorporating well after each addition. Mix in the yogurt and beat until incorporated.
10 tablespoon unsalted butter, 1 cup granulated sugar minus 1 tablespoon, 2 large eggs, 1 1/2 cup low-fat plain yogurt
Slowly add in the flour mixture and mix until all combined and well-incorporated.
Using a spatula, fold in the chocolate chips.
1 cup semi-sweet chocolate chips
Using a large ice cream scoop, divide batter evenly in the prepared muffin pan.
Bake for 25-30 minutes or until a toothpick inserted into the middle comes out clean.
Let cool in muffin pan for 5 minutes then remove them and place on a wire rack to cool completely.