For the fluffiest texture, bring the eggs and heavy cream to room temperature before mixing so the melted coconut oil does not seize up and create dense pockets in the batter. Almond flour brands vary in grind and absorbency, so if the batter looks overly thin, let it sit for a few minutes to thicken rather than adding more flour, which can make the muffins heavy. Always taste the batter for sweetness before baking, adding a small extra amount of keto sweetener if you prefer a dessert-level muffin. To freeze, place completely cooled muffins on a baking sheet to firm up, then transfer them to a freezer bag and squeeze out excess air; reheat gently in the microwave or in a low oven until warmed through.