Cream butter and shortening until light in color, add both sugars and cream until fluffy. Add eggs and beat slightly, then add vanilla and beat until combined. Add malted milk powder and beat until combined. Sift together flour, baking soda, and salt. Add to butter mixture, beating gently until just combined. Add chopped malted milk Easter egg candy and stir in gently. Use a cookie scoop to scoop cookies onto baking sheet covered with parchment paper. Bake for 10 to 12 minutes. Bake less if you want chewy cookies; more if you want crispy cookies.