Step 1: Preheat the Oven. Start by preheating your oven to 375°F (190°C). This ensures that your muffins will bake evenly.
Step 2: Prepare the Muffin Tin. Grease your muffin tin with a little butter or line it with muffin liners to prevent sticking.
Step 3: Mix Dry Ingredients. In a large mixing bowl, combine the almond flour, baking powder, garlic powder, and onion powder. Whisk together until well combined.
Step 4: Whisk Wet Ingredients. In another bowl, beat the large eggs until frothy. Add the melted butter, natural yogurt, and Marmite to the eggs, whisking until everything is well incorporated.
Step 5: Combine Wet and Dry Ingredients. Pour the wet ingredients into the bowl of dry ingredients. Gently fold the mixture together using a spatula until just combined. Be careful not to overmix.
Step 6: Add Cheese. Fold in the grated mature cheddar cheese, ensuring it's evenly distributed throughout the batter.
Step 7: Fill the Muffin Tin. Spoon the batter into the prepared muffin tin, filling each cup about three-quarters full.
Step 8: Bake. Place the muffin tin in the preheated oven and bake for 18-20 minutes, or until the muffins are golden brown and a toothpick inserted into the center comes out clean.
Step 9: Cool and Enjoy. Once baked, remove the muffins from the oven and let them cool in the tin for about 5 minutes. Then transfer them to a cooling rack to cool completely. Enjoy your delicious Marmite Muffins warm or at room temperature!