Preheat your oven to 375°F (190°C).
Split the English muffins in half and place them on a baking sheet.
Lightly brush the muffin halves with olive oil, if desired.
Spread a tablespoon of pizza sauce on each muffin half.
Sprinkle mozzarella cheese evenly over the sauce.
Add pepperoni slices on top of the cheese.
Sprinkle dried oregano for added flavor.
Bake in the oven for 10-15 minutes, until the cheese is bubbly.
Remove from the oven and let cool for a few minutes.
Serve warm and enjoy your delicious english muffin pizzas!