Use finely blanched almond flour for the best texture and to keep the bites from tasting grainy. Check the nutrition label on your pepperoni and marinara to ensure they are low in carbs and free of added sugars. For a crispier texture, avoid overfilling the mini muffin cups so more edge surface can brown. You can swap part of the mozzarella for shredded provolone or Italian cheese blend to change the flavor profile while keeping the recipe keto. To make these bites ahead for parties, bake and cool completely, then reheat on a parchment-lined baking sheet at 350°F until hot and sizzling before serving. Each serving is calculated as about four bites, depending on the size of your mini muffin tin and how full you pack each cup.