Step 1: Make a 1 block hole on both sides and place the dispenser inside of them.
Step 2: Now fill the dispenser with the food or whatever you want, eggs won't work!
Step 3: Place two blocks of your choice above the dispensers, maybe white blocks to make it look like a fridge.
Step 4: Now the final step, place a button or a lever on the lower of the two blocks and you're done!

• 2 Iron Blocks or 2 Blocks of White Wool;
  
• 1 Dispenser;
  
• 1 Button or Leaver;
  
• and your Food or Item that you wanna use in it.