Strain excess liquid of riced cauliflower.
In a bowl, combine riced cauliflower, beaten egg and Edam cheese. Add mustard seed, sage, oregano, thyme and black pepper. Mix well. No need to add salt since Edam cheese is usually a bit salty.
In a baking sheet, spread cauliflower mixture. Using Christmas Cookie cutters, fill with cauliflower mixture. If you prefer a thick pizza, fill the cookie cutters to rim. If you want a thinner pizza, fill only half and then flatten with the back of the spoon.
In a greased baking sheet, bake cauliflower crusts in a preheated 350°F oven for 6 to 10 minutes or until they start to brown. Avoid browning too much as you will bake this again with the rest of the ingredients. Allow to cool for handling.
Arrange pizza bites. Spread a thin layer of Homemade Sugar Free Pizza Sauce, add grated Edam and mozzarella cheese. Top with red and green bell pepper, red onion and ham pieces. For Christmas shapes like the Snowman and Angel, add a slice of black olives at the upper part – resembling the portion of the head. Top with more mozzarella as desired.
In a preheated 350F, Christmas pizza bites for 5 to 8 minutes or until cheese has melted and a bit golden. Edam cheese may become a bit crunchy as it doesn't easily melt.