Three cheese muffins

Name: Three cheese muffins
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: European, American
Ingredients: 2 1/2 cups self-raising flour; 1 tbsp caster sugar; 1/3 cup shredded fresh basil leaves; 2 green onions, finely chopped; 3/4 cup milk; 1 egg, lightly beaten; 1/2 cup vegetable oil; 2 garlic cloves, crushed; 1/2 cup grated vintage cheddar cheese; 1/2 cup finely grated parmesan cheese; 100g feta, crumbled (see note); Olive tapenade or spicy roasted capsicum dip, to serve