1 serving

1 cucumber half peeled
1 cup fresh spinach
1/2 green apple, cored
1/2-inch piece fresh ginger, grated
dash of lime juice, optional
1 cup cold water
stevia powder to taste

In a powerful blender, combine ingredients and blend until smooth. Add more cold water if necessary to reach desired consistency. Serve immediately.

Cal: 97 - P: 2.7 - F: 0 - Cb: 21.1

You can replace it with a fruit or portion of fruit, if you have fruit in your plan. Or for a whole wheat bread or rice cracker, if you have bread or chicken in your plan.
If you don't want to use it as a replacement, you can add it to your plan without replacing anything, one day of the week at your snack or lunch.