Gather all ingredients.

Preheat the oven to 350 degrees F (175 degrees C). Grease a 8 1/2 × 4 1/2-inch silicone loaf pan with cooking spray.

Whisk eggs in a bowl until smooth and creamy, about 3 minutes. Add melted butter and olive oil; mix until well combined.

Combine almond flour, baking powder, xanthan gum, and salt in a separate bowl; mix well. Add gradually to the egg mixture, mixing well until a thick batter is formed.

Pour batter into the prepared pan and smooth the top with a spatula.

Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 45 minutes.