Place date halves on a small baking sheet and flatten dates with a rolling pin or the back of a cup. You can make them as thin or thick as you like. Be sure each date overlaps slightly so they stick together.
Spread peanut butter on top of date layer.
Sprinkle crushed pretzels over peanut butter.
Melt chocolate in the microwave in 30 second intervals, stirring after every interval. Alternatively, you can melt the chocolate over a double boiler on the stove.Tip: You can melt the coconut oil with the chocolate to make it thinner.
Spread chocolate on top of pretzel layer.
Place in the freezer for at least 30 minutes.
Cut date bark into squares. Store in the fridge for up to a week, or in the freezer for up to 3 months (you may want to let it thaw a bit before eating).