*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
**Nutrient information is not available for all ingredients. Amount is based on available nutrient data.
(-)Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.
Heat oil in a heavy saucepan over medium heat and saute bacon until just cooked but not crisp.
Add shallots and cook until translucent. Add mushrooms and continue cooking until water evaporates, about 5 minutes.
Transfer mixture to a large mixing bowl and let cool. Add salt, pepper, Worcestershire sauce and egg to mixture. Add beef and gently mix by hand until all ingredients are incorporated, without over-mixing.
Divide mixture into 16 equal portions. Form into thick patties, about 1-1/2 inches thick and 2-1/2 inches in diameter, tucking a piece of cheese and 2 walnut halves into the centre of each patty.
Grill patties on medium-high heat until cooked to preferred doneness. Serve in small dinner rolls or between baguette slices with desired condiments.