Preheat oven to 350.
In a large bowl, sift together the flour, baking soda and salt.
In a mixing bowl, cream the shortenings together. Add sugars and beat until combined.
Add the eggs, 1 at a time, and then add in the vanilla. Beat until incorporated.
Add the malt powder and slowly mix until combined.
Add the flour gradually and mix until just combined.
Stir in M&Ms.
Cover and refrigerate dough for at least 1 hour.
Drop by tablespoons onto baking sheets lined with parchment.
Bake until golden and almost completely set in the center, about 10 to 12 minutes.
Let cookies cool on the baking sheets about 5 minutes before transferring to a rack to completely cool.
