Preheat oven to 400°. Grease or line muffin tins with cupcake liners.
Whisk together dry ingredients in a large bowl.
In a medium bowl, whisk together eggs, milk, sour cream and oil.
Pour the wet ingredients into the dry ingredients and mix until well combined.
Scoop batter into the muffin tins and fill each cup to the very top.
Place muffins in oven and bake for 22 to 25 minutes, or until tops start to turn a light golden brown, and when a toothpick inserted in the middle comes out clean.
Let muffins cool on a cooling rack.
Enjoy!