Preheat your oven to 350°F/180°C.
Dice the tomatoes and put them in a large bowl.
Cut the mini pepperoni into small slices and save about 5 pepperoni slices per muffin - these will be used to decorate the pizza muffins before baking.
Add the remaining pepperoni slices to the large bowl as well.
Add the dry ingredients to the bowl and mix well.
Now add the remaining ingredients for the muffins and mix everything with a spoon or spatula until you get an even dough.
Place the pepperoni slices you set aside in step 2 on top of your pizza muffins.
Bake for approx. 15 minutes in your preheated oven.
Let the finished low carb pizza muffins cool slightly before enjoying them.
Store the keto pizza muffins in an airtight container in the fridge - the muffins will keep for about 2-3 days before they start to dry out a bit.
Tip: You can freeze these muffins!
To do so, wrap them tightly with a layer of plastic wrap and then a layer of aluminum foil and place them in your freezer.
Let them defrost at room temperature for a few hours once you're ready to eat them.
Serving Size 1 muffin
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.