Preheat the oven to 375°F (190°C). Line a 12-cup muffin tin with paper liners or grease well.
In a large bowl, whisk together the flour, baking powder, baking soda, and salt.
In another bowl, rub the orange zest into the sugar with your fingers, then add the orange juice, ricotta, oil, eggs, and vanilla. Whisk until smooth.
Gradually fold the wet ingredients into the dry ingredients until just combined. Do not over-mix.
Divide the batter evenly among the muffin cups. Bake for 18-22 minutes, or until a toothpick comes out clean.
Let cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.
Notes
Store in an airtight container at room temperature up to 3 days.
For tips, step-by-step photos, and extra details, be sure to read the full post above before starting. It’s packed with helpful info to answer common questions!