Mix together dry ingredients. Use a pastry blender to cut in the solid coconut oil until well incorporated (same as you would with shortening).
Store your mix at or below room temperature (any warmer and the coconut oil will become soft and liquid. If you live in a very warm climate, storing in the fridge is probably best). Makes about 10 cups of mix.
When you are ready to make muffins:
Preheat oven 400°F. Place liners into muffin pan.
Mix 2 1/3 cup muffin mix together with 1 cup milk and 1 egg, slightly beaten.
Add any mix-ins per this chart. (Note: what is included as "optional" in this recipe is what is called for in the current meal plan. For March 12th, your add ins are cranberries, nutmeg and cinnamon).
Scoop batter into prepared muffin cups, and bake for 20-22 minutes.