Thoroughly wash the collards, discarding any blemished leaf portions, and trimming the bottom of the stems.
If desired, you can fold each leaf and cut the lower portion of the thick stem (spine) out. It's optional, as the stem does cook up tender also.
Chop the collard greens up roughly by rolling and then cutting slices, then cut into 1 ½" to 2" pieces.
Cut the ham, or bacon, into about ½" dice. Brown lightly in a skillet with the onion and the garlic.
8 oz ham, 1 medium onion, 2 cloves garlic
Add the collards to the Crockpot (or a Dutch oven). Top them with the browned ham or bacon, and the onion, and garlic, black pepper, and optional red pepper flakes. If you like vinegar also, add it now.
3 lbs collards, ¼ cup apple cider vinegar, ½ teaspoon black pepper, ¼ teaspoon red pepper flakes
Top the greens with the ham or bacon, it will help weigh them down in the pot. Set the slow cooker on high for 4 hours, or low for 8 hours.PRO TIP: If you don't have a slow cooker, you can make this Crockpot collard greens recipe on the stovetop. Just simmer the collard greens, ham, onion, apple cider vinegar, salt, and pepper in a large pot for 2-3 hours, or until the collard greens are tender. Depending on your taste, you may like your 'mess of greens' with a little more red pepper flakes, black pepper, or even with the apple cider vinegar (it's delicious!).
½ teaspoon salt