Slice each croissant in half lengthwise and set aside.
Divide sausage into twelve equal patties and fry in a large skillet over medium-high heat until fully cooked. Remove from pan and place on a paper towel.
Fry eggs over medium heat until cooked over medium.
Mix mustard and honey and spread over the bottom side of each croissant.
Place one fried egg, sausage patty, and a slice of cheese over the honey mustard and top with the croissant top.
Repeat until all the sandwiches are made.