Using your stand mixer fitted with the paddle attachment, beat the Crisco, brown sugar, and granulated sugar until light and fluffy.
Add vanilla extract, water, and egg and mix until combined. Scrape down the sides and bottom of the bowl as needed.
In a separate bowl, sift together the flour, baking soda, and salt. Add flour mixture to sugar mixture and mix on low-speed until just combined.
Gently fold in 1/2 cup of M&Ms. Set aside the rest of the M&Ms for later use. Cover the bowl with plastic wrap and place in the frudge for at least 2 hours.
Once the dough has been chilled, preheat oven to 375 degrees F.
Line a cookie sheet with parchment paper. Scoop about 1.5 tablespoons of dough and roll into a round ball. Place on baking sheet and repeat with the remainder of the dough, leaving some room between cookies for the cookies to spread.
Place tray in the oven and bake for 8-10 minutes until the edges are lightly browned.
As soon as the cookies come out of the oven, gently press the remainder of the M&M's into the areas that need it (this helps with presentation). Allow cookies to cool for about 5 minutes. Then transfer to a wire rack to cool completely.