Preheat oven to 375°F. Line 12 muffin cups with paper liners. Lightly spray liners with nonstick cooking spray.
Sift together flour, baking powder, baking soda, and salt into a bowl.
In another bowl using an electric mixer, blend oil, eggs, and Splenda Stevia Sweetener until combined. Mix in vanilla extract.
Add eggs one at a time, beating until blended after each addition. Mix in vanilla extract.
Add about half of flour mixture; beat on low speed until blended. Add milk and blend on low; then add remaining flour mixture and mix just until blended.
Mix in Greek Yogurt.
Fold in blueberries. Spoon batter into prepared muffin pan.
Bake for 20–22 minutes or until golden. Remove muffins from pan and cool on a wire rack.