Measure out and prepare all of the ingredients. We'll start by making the biscuit mixture and then the filling. Preheat oven to 350F.

Place the golden flaxseed meal in a coffee grinder to make it really fine.

In a bowl, combine the fine golden flaxseed meal, almond flour, xanthan gum, baking powder, milk powder, and salt. Whisk it all together.

Smash in the butter with your clean fingers until it all seems to be incorporated together.

Beat the egg along with the apple cider vinegar. Combine this into the mixture and stir well.

Spray a baking pan with cooking spray. Add in the bell pepper, mushrooms, onion, and feta cheese to the baking pan.

Whisk the eggs and heavy cream together. Layer this on top of the veggies. Season with salt to taste.

Evenly divide up the biscuit batter, size them into balls, and place on top of the eggs and vegetables. Brush the biscuits with the melted butter.

Bake in the oven for about 30 minutes.

Serve and enjoy!