Turn a large clove of garlic into a paste with a mortar or bottom of a cup. Put in a food processor or if you have a hand held processor just put in a deep bowl. Add a couple basil leaves and Rosemary (fresh is best). Small amount of onion powder. Salt and pepper to taste. If you use salted butter make sure not to add too much extra salt.For every four tablespoons of real butter add one teaspoon extra virgin olive oil. Blend all that up and you are done.
I like a fresh multi-grain focaccia, or a baguette If you make your own bread try adding some crushed red pepper and italian seasoning to the dough.
References :
me

Sun-Dried Tomato Butter

Ingredients:

1/4 cup butter, softened
2 ounces sun-dried tomatoes (about 6 large), softened in boiling water and chopped
2 tablespoon Italian parsley, finely chopped
2 tablespoon fresh basil, finely chopped

Preparation:

Using a spoon, mix butter with respective ingredients. Roll each into a log shape and wrap in plastic wrap or wax paper. Refrigerate until firm, 2 to 3 hours, then soften to room temperature before serving. I love this on crostini, bruchetta, and fish.

Chili Butter

Ingredients:

1/4 cup butter, softened
1 teaspoon Worcestershire sauce
1/4 teaspoon hot sauce
1 teaspoon sweet chili powder
1 teaspoon dried oregano
1/4 teaspoon ground cumin
1/4 teaspoon sweet paprika
1/4 teaspoon garlic powder
1/4 teaspoon onion powder
1/8 teaspoon chili powder
1/8 teaspoon salt

Preparation:

Using a spoon, mix butter with respective ingredients. Roll each into a log shape and wrap in plastic wrap or wax paper. Refrigerate until firm, 2 to 3 hours, then soften to room temperature before serving. This butter is the best thing for corn on the cob.

Orange Butter

Ingredients:

8 Tbs. (1 stick) unsalted butter, at room temperature
1 tsp. confectioners’ sugar
2 Tbs. orange marmalade
Zest of 1 orange

Preparation:

In a bowl, using a hand held mixer, beat the butter on medium speed until soft and creamy, about 2 minutes. Add the remaining ingredients and beat until combined, about 1 minute. Transfer the flavored butter to a butter dish or small bowl and serve immediately, or cover and refrigerate until ready to serve. Make about 1/2 cup. Great on waffles, pancakes, biscuits, rolls.

Mixed Berry Butter

Ingredients:

8 Tbs. (1 stick) unsalted butter, at room temperature
1 tsp. confectioners’ sugar
2 Tbs. mixed berry preserves

Preparation:

In a bowl, using a hand held mixer, beat the butter on medium speed until soft and creamy, about 2 minutes. Add the remaining ingredients and beat until combined, about 1 minute. Transfer the flavored butter to a butter dish or small bowl and serve immediately, or cover and refrigerate until ready to serve. Make about 1/2 cup. Great on waffles, pancakes, biscuits, rolls or on sliced freshly baked, still warm bread.
References :
http://www.everyone-is-a-chef.com