The Best Soft and Chewy M&M'S Cookies

INGREDIENTS

1/2

cup unsalted butter, softened (1 stick)

1/2

cup light brown sugar, packed

1/4 cup

granulated sugar

large egg

2 tsp

vanilla extract

1 1/4 cups

all-purpose flour

1/4 cup

instant vanilla pudding mix (not cook-and-serve, not sugar-free)

1/2 tsp

baking soda

1/4 tsp

salt, or to taste

3/4 cup

M&M’S, plus more for adding to dough mounds (I used Dark Chocolate M&M’S, other varieties may be substituted)

1/2 cup

semi-sweet chocolate chips, plus more for adding to dough mounds