Preheat oven to 375 degrees. Prepare a 12-cup muffin pan with cupcake liners.
In a medium bowl, whisk together flour, baking soda, baking powder, salt, and sugar. Set aside.
1 ¾ cups all-purpose flour, ⅔ cup sugar, 1 teaspoon baking powder, 1 teaspoon baking soda, ½ teaspoon salt
In a large mixing bowl, whisk together orange juice, zest, eggs, butter, and yogurt. Pour into dry ingredients
½ cup unsalted butter, 1 egg, 2 oranges, 1 cup Greek yogurt
Stir together wet and dry ingredients until just combined.
Divide the batter into 12 muffin cups.
Bake for 18 to 20 minutes until a toothpick inserted in the middle comes out clean. Allow to rest in muffin tin for 5 minutes before moving to cooking rack.
Melt chocolate chips in a microwave safe bowl, for 20 seconds, stirring well and repeatedly heating at 10-second increments until smooth. Do not overheat. If chocolate is too thick, add ½ teaspoon coconut oil or vegetable shortening.
½ cup semi-sweet chocolate chips
Drizzle chocolate over muffins.
Notes
You could also make an easy orange glaze by combining 1/2 cup of powdered sugar with a teaspoon and a half of orange juice.