Print off your preferred label and be sure the size will fit your Pyrex dish with the lid on.
Place the print out underneath the contact paper and trace the label with a pen.
Once you’ve traced all your labels cut the inside of the label out. Be sure that you leave about ¾-inch border around the label shape so that you have room when stenciling.
Peel the adhesive backing off of the stencil and carefully position it on the glass dish. Work slowly and make sure that all air bubbles are out before you start applying paint.
Squeeze some chalkboard paint onto a paper plate. Load the cosmetic sponge with paint then dab off the excess. Stencil one layer of chalkboard paint over the stencils on each dish. Start over again for a second coat.
Don’t wait, go ahead and peel the stencils off of the glass. If there are any blemishes fix them with a fine point paintbrush.
Now for the hard part; drying time. You will need to let these sit for 4 days. After the 4 days is up, put the glass containers (remove the lids) in a cold oven. Close the door and turn the temperature to 325 F. Bake for 30 minutes. When finished, crack the door open and leave the containers in the oven until the oven has cooled completely.
Remove the dishes from the oven and condition the chalkboard by rubbing a piece of chalk all over the surface of the label. Erase the chalk with a soft cloth. Your dishes are now ready for use!