Pre-heat your oven to 180 degrees celsius.
Prepare your asparagus, trim any tough ends from the base of the spears. Cut the spears in half. Set aside the tips of the spears, slice the bottom halves into small pieces.
Grease your pie dish with butter
Add the flour straight into the bottom of the greased pie dish, then add the eggs, milk and salt and pepper.
Gently whisk these ingredients together, don't panic if there are a few lumps, they cook out.
Add the onion, small asparagus pieces, cheese, and bacon, stir so they are evenly distributed.
Top the quiche with the asparagus tips.
Bake for 45 minutes until golden and the quiche is cooked
Allow to cool for 10 minutes, slice, and enjoy!