Cream shortening, sugars, eggs, and vanilla thoroughly. Sift together flour, soda, and salt. Add dry ingredients gradually to creamed mixture. Mix well. Stir in 1/1/2 cups M&Ms. Reserve remaining candies for decorating.
Drop by teaspoon on ungreased baking sheet. Decorate tops of cookies with remaining M&M's. Bake at 375 degrees for 10 to 12 minutes, or until brown. After baking, some of the candies may be slighly cracked. This adds texture and interest to your cookies. Makes about 6 dozen 2 1/2 inch cookies.