Summer Veggie Sandwich

Name: Summer Veggie Sandwich
Ingredients: For the basil mayonnaise; 1 cup packed basil leaves, finely chopped; 3 tablespoons extra-virgin olive oil; pinch kosher salt; 1 egg yolk; 1 tablespoon lemon juice; 1/2 cup canola oil; 1 teaspoon white wine vinegar; For the sandwich; 4 slices multigrain bread; 1 ripe avocado, sliced; 2 cups sprouts; 1 cup shredded red cabbage; 2 handfuls green leaf lettuce; 1 cup shredded carrots; 1 large cucumber, sliced thinly; 1 ripe tomato, sliced