Preheat oven to 180 degrees Celsius (350 degrees Fahrenheit).

Sift together the flour and baking powder in a large bowl.

Add the grated cheddar cheese to the dry ingredients and mix well.

In a separate bowl, melt the butter and marmite together in the microwave or on the stovetop.

Allow the melted butter and marmite mixture to cool slightly.

Whisk the milk and eggs together in the same bowl.

Add the cooled butter/marmite mixture to the milk and egg mixture and stir to combine.

Pour the wet ingredients into the dry ingredients.

Gently fold the wet and dry ingredients together until just combined. Do not overmix; the batter should be lumpy.

Grease a 12-cup muffin pan.

Spoon the muffin batter into the prepared muffin pan, filling each cup about 3/4 full.

Drizzle a small amount of marmite over the top of each muffin.

Sprinkle a bit of grated cheddar cheese over each muffin.

Bake in the preheated oven for 20-25 minutes, or until a toothpick inserted into the center comes out clean.

Let the muffins cool in the pan for a few minutes before transferring them to a wire rack to cool completely.

Enjoy warm or at room temperature.