The answer to this question is yes, but there are certain criteria involved. Most basic DIY epoxy resins for smaller projects can only withstand a certain amount of heat before it begins to distort.
Your basic DIY epoxy can withstand low amounts of heat, but anything between 20°C to 90°C (68 -195 Fahrenheit) and the epoxy will soften and cause distortion.
Apply your color coat with a flat leveling tool and use a blowtorch to remove any bubbles. Add a clear coat 24 hours after the color coat. Use sandpaper to sand the surface and wipe away dust.
Curing time, it should be hard after several days. Enjoy your new and improved countertops. Keep clean with regular surface cleaners and try to avoid scrubbing.
When there are additives involved, such as pigments or inks, this will reduce the temperature resistance. To avoid this, it is advisable to apply another clear topcoat.