For the pecans: Combine the butter, salt, cinnamon, ground red pepper, and a dash of hot sauce in a medium bowl. Add the pecans, stirring to coat.
Spread in a single layer on an ungreased baking sheet. Bake at 300 degrees for 15 minutes, stirring once. Cool completely on baking sheet on a wire rack.
For the salad: Combine the lettuces, apple, cheese, and Spiced Pecans in a large bowl; toss gently, and set aside.
For the dressing: Combine the olive oil, vinegar, mustard, salt and pepper in a jar. Cover tightly, and shake vigorously. Pour dressing mixture over the lettuce mixture; toss gently. Serve immediately.