Preheat your oven to 325 F.
Remove the stems from the mushrooms. Chop the removed stems finely and set aside.
20 large button mushrooms
Toss the mushroom caps in a bowl with the olive oil, and set aside.
2 tbsp. olive oil
Melt some cooking fat in a skillet placed over medium heat.
Cooking fat
Add the sausages to the skillet and cook for 8 to 10 minutes while breaking them apart into tiny pieces with a wooden spoon.
Add the chopped mushroom stems, onion, bell pepper, and garlic to the sausages, and cook for another 5 minutes.
1 lb. sausages, 1 onion, ½ bell pepper, 2 garlic cloves
Add the almond meal and stir until well combined with the other ingredients. Remove from the heat.
⅔ cup almond meal
Add the parsley, give it a good stir, and season to taste with salt and pepper.
2 tbsp. fresh parsley leaves, Sea salt and freshly ground black pepper
Fill each mushroom cap with a generous amount of the sausage mixture.
Line all the stuffed mushrooms on a baking sheet and place them in the oven.
Cook for about 40 minutes or until the stuffing is browned and crusty.
Remove from the oven and serve while warm.