Preheat oven to 350 degrees and line baking sheets with parchment paper.
In the bowl of a stand mixer, combine shortening, brown sugar and granulated sugar. Blend until fluffy.
Add vanilla extract followed by eggs, continue mixing until well combined, scraping down sides as needed.
Add flour, salt and baking soda and mix just until combined.
add oatmeal and continue mixing just until combined.
Stir in mini chocolate chips and regular chocolate chips.
Scoop cookie dough using medium sized cookie scoop, about 1.5 tablespoons of cookie dough.
Top each cookie dough ball with 6-9 M&M'S and bake 8-9 minutes until edges are light golden brown.
Do not over bake, cookies will continue cooking as they cool.