5 small mandarin oranges, peel and separate into sections

Preheat oven to 375 F and line a muffin pan with parchment paper liners

Place mandarin sections on the bottom of each muffin cup (4 pieces per cup)

In a large bowl, whisk together first 5 ingredients

In a separate bowl beat together remaining ingredients except for turbinado sugar

Add wet ingredients to dry and beat the batter until smooth, about a minute

Using a spoon, drop the batter into the muffin cups and sprinkle with turbinado sugar