First take a small saucepan and pour in the coconut milk, oat milk, vanilla extract, and ground cardamom. Whisk together.
Turn the stove top to medium heat, bringing the saucepan ingredients to a soft boil. (about 10 minutes) While the saucepan heats up, prepare the espresso.
Once the ingredients come to a boil, add in the espresso, date syrup, and cacao powder, whisking constantly for about 2 minutes. (or until the powder is dissolved)
Then turn off the stove and let the saucepan cool for 1 hour, or until the liquid is cool enough to pour into the popsicle molds.
Once it is cool, give it a little whisk again and then use a funnel to pour the mixture from the saucepan into the molds.
Freeze for about 5 hours, or until the molds feel firm and frozen. (freezing time may vary depending on the size of your popsicle molds)
Before eating, set out the pops and let them thaw for 2-3 minutes before gently removing them from the popsicle mold.