Prepare Yumbini with 3/4 cup water according to package directions and set aside.
Start a big pot of water boiling on the stove.
Rinse the collard leaves and trim out the thick stems
When the water is boiling, drop the trimmed leaves into the water, boil for one to two minutes.
Drain the boiling water and immediately add cold water to the pot to cool the leaves.
Place one leaf at a time, vein side up on the counter. Put 1/8th to 1/6th of the Yumbini (two or three spoonsful) on the leaf, just above the spot where you trimmed out the stem.
If desired, add other thinly sliced vegetables, laying horizontal.
Fold the two bottom "tails" up, then fold in the sides and roll forward to make a nice packet.
Continue until you have all the Yumbini rolled up in the collard leaves.
If you plan to serve the Collard Rolls cold, you are done! Serve whole or cut in half using a serrated knife and serve open side up for dramatic effect.
To heat the Collard Rolls, place in a steamer basket in a pot with about an inch of water in the bottom.
Cover and heat on the stove until the water boils. Steam for 10 minutes.
Alternatively, place rolls on a microwave safe plate and heat in the microwave for 2-3 minutes until hot, turning often.
Serve with ketchup or barbecue sauce if desired.
Try Collard Rolls as appetizers or finger food on your next party or picnic!