Cook’s note. A new favorite condiment at our house. I really like using the spreadable butter they sell in grocery stores, but this is better. It has only three ingredients (two, if you omit the salt) and it is lovely on toast, corn, potatoes, or anything you would put butter on. The flavor of the olive oil comes through in a balanced way, but this is definitely a savory spread. I also think it would be great with herbs such as rosemary or roasted garlic beaten in.
1 stick (1/2 cup or 8 Tablespoons) softened (not melted) unsalted butter
1/3 cup extra virgin olive oil
1/8 teaspoon kosher salt
Using a stand mixer, beat the butter and olive oil together, scraping down sides of bowl, until fully incorporated and smooth (mixture will be runny). Beat in salt. Pour into storage container and refrigerate until set.
Adapted from http://kitchensimplicity.com/olive-oil-butter-spread/.