Beef Sliders Stuffed with Walnuts and Gorgonzola

Ingredients

• 1 tsp olive oil
• 4 slices bacon (finely chopped (optional))
• 1/2 cup shallots (finely chopped)
• 2 cups button mushrooms (finely chopped)
• 1 tsp salt
• 1 tsp ground black pepper
• 1 tsp Worcestershire sauce
• 1 egg (lightly beaten)
• 1 lb regular ground beef
• 4 oz Gorgonzola or blue cheese (divided into 16 portions)
• 32 walnut halves
• 16 small dinner rolls ((or two 24-inch baguettes, sliced into 8 equal portions, then sliced horizontally))