01 -  Mix mayonnaise, Dijon mustard, maple syrup, and smoked paprika in a small bowl. Set aside. 
 02 -  In a skillet over medium heat, cook bacon until crispy. Drain on paper towels. 
 03 -  Shape ground beef into 4 equal patties. Season both sides with salt and pepper. 
 04 -  Cook patties over medium-high heat for 3–4 minutes per side or until desired doneness. Add cheese in the last minute and cover to melt. 
 05 -  In a non-stick pan, fry eggs sunny-side up or over-easy, keeping the yolk runny if desired. Season with salt and pepper. 
 06 -  Lightly toast the buttered brioche burger buns until golden. 
 07 -  Spread optional sauce on the bottom buns. Layer with spinach, tomato, burger patty with melted cheese, bacon, fried egg, and avocado slices. Cap with the top bun and serve immediately.