In a medium bowl, combine the sugars with the canola oil, melted butter, eggs, yogurt, buttermilk and vanilla extract. Whisk until smooth.
Combine the flour, salt, baking soda and baking powder in a large mixing bowl.
Add the wet ingredients to the dry ingredients and mix together until they are just combined.
Fold the mini chocolate chips into the muffins batter.
Cover the batter with plastic wrap. Chill the muffin batter in the refrigerator for at least 30 minutes.
Preheat the oven to 425°.
Use paper liners or cooking spray to prepare your mini muffin pan.
Use a cookie scoop to fill the mini-muffin pan - fill each cup to the top.
Sprinkle each mini muffin with a few mini chocolate chips.
Bake the mini muffins at 425° for the first five minutes. Lower the oven temperature to 350° and bake for an additional 5-7 minutes, or until the muffins are golden brown on the top.
Move baked muffins to a wire rack. Let your mini muffins cool slightly before popping one (or two) into your mouth for a taste test