Preheat oven to 350 degrees and line a large baking sheet with parchment paper.
Place room temperature butter into a stand mixer along with the brown and granulated sugar. Beat to combine then add egg and vanilla extract, beating to combine the wet ingredients.
Once combined, add your dry ingredients, flour, baking soda, corn starch, instant vanilla pudding mix and salt. Mix on low until just combined.
Lastly, mix in 1 ½ cup of semi-sweet chocolate chips
Place the easter m&m's and ½ cup of chocolate chips on a plate or medium bowl
Using a cookie scoop or ice cream scoop, scoop our your cookie dough.
Grab your cookie dough ball and press it into the plate filled with m&m's. Be sure to press all those m&m's into the top the cookie.
Place the cookies in the freezer for 15 minutes then bake for 12-15 minutes.
Once ready to bake, place the cookies on a parchment lined cookie sheet and space them about 2 inches apart.
Right before placing the cookies in the oven, sprinkle your Easter themed sprinkles on the cookies.
Bake them for 13-15 minutes, carefully transfer them to a cooling rack once they come out of the oven. Allow the cookies to cool then enjoy.