Wisk together vinegar, mustard, & garlic and let sit for 5 minutes. Stir in olive oil and salt & pepper to taste.
- Wash romaine lettuce & radicchio & thinly slice.
- Chop off fennel ferns and toss, wash bulb & peel orange & toss rind. Slice fennel, orange, & beet width wise.
- Toss radicchio, lettuce/ spring mix in a large bowel to combine. Top with croutons, apple, and Parmesan. Drizzle dressing over and toss to coat. Serve & enjoy.