The game has plenty of foods that help the character to regain his health and unlike some games these foods are easy to incorporate into your theme. Apples, chicken, pumpkin pie, mushroom soup are only a few of the foods that you can find in the game so it's worth doing a little research into the game and selecting some food items you can add to your party foods. It's simple but a great way to show that you know something about the game.
As the beverage a simple green colored drink would be perfect as creeper juice. You could make your own by simply using lemonade and tinting it with green food coloring.
Here are some more Minecraft party foods and ideas you can include...

