Whole Grain Mustard Dressing

From Bon Appetit.
Ingredients:
1/2 c. olive oil
1/2 c. walnut oil
1/4 c. white or red wine vinegar
1/4 c. whole grain mustard
2 tsp. honey
1/2 tsp. fine sea salt, plus more
1/2 tsp. freshly ground black pepper

Whisk all ingredients in a small bowl or shake, covered, in a jar.
Can be made 1 week ahead. Cover and chill.
Makes 1 cup.