• Separate coffee filters into groups of 10 for dyeing.
• Add food coloring to a glass bowl. I started with 10 drops but found that 15 to 20 drops provide the best amount of color.
• Next, add 2 cups of water to each glass bowl and stir to evenly mix the food coloring throughout.
• Now, add your filters one at a time pushing them down so that they are fully submerged in the dye.
• Allow filters to soak for 20 to 30 minutes depending on how deep and rich of a color you want.
• Place several layers of paper towels on to a baking pan and pancake the filters between them. Pat down (be aggressive) the filters to remove as much fo the liquid as possible.

Now, you can go in two directions with this next step. 

• Dyed filters can either be separated into single layers and allowed to dry on cooling racks OR they can place them on parchment paper on top of a baking sheet and bake for 5 to 10 minutes in a 250-degree oven. 
• IF you go the oven route, check on them often and do not leave them alone…they’re paper in an oven. 

  You want to be careful! I stuck around the kitchen doing other things for the drying process.