Preheat the oven to 200C/400F degrees.

Grease a baking/quiche tin.

In a bowl, whisk the coconut flour, psyllium husk powder, flaxseed, baking powder and salt.

Add the oil and the egg and mix until thoroughly combined.

Gradually add the boiling water and mix until a dough is formed.

Roll out the dough in between two pieces of parchment paper.

Gently place the pastry into the baking tin and press out over all the edges. Trim if necessary.

Bake for 15 minutes.

Remove from the oven and reduce the temperature to 180C/350F degrees.

Beat the eggs with cream. Season.

Place the broccoli florets into the pastry case.

Scatter the walnuts over the broccoli.

Cut the cheese into pieces and place into the pastry case.

Pour the egg mixture over the filling and bake for 30-35 minutes until golden and firm.