Step 1

preheat oven to 400 degrees

Step 2

cook the bacon until just before crispy

Step 3

while bacon is cooking melt butter in a large saucepan and add the onion

Step 4

allow to cook until a dark golden brown, stirring occasionally

Step 5

remove from heat and allow to cool

Step 6

whisk eggs, cream, and milk together until fluffy

Step 7

add in salt, pepper and mustard powder

Step 8

stir in the bacon, sausage, onion and cheese

Step 9

press the crust into a tart pan or a deep dish pie pan

Step 10

pour the egg mixture into the pie crust and place onto a baking dish

Step 11

loosely cover with foil and place in the oven

Step 12

bake for 40 min

Step 13

remove the foil and bake for another 10 to 15 min until crust is golden

Step 14

remove and allow to cool for 5 to 10 min

Step 15

slice and enjoy!