Aussie Meat Pie

I found the recipe and MM cooked the meat both times. I just assembled them the first time. Second time he did it for the international festival. He used way more black pepper the second time and it gave it a really nice kick. We still want to try a mushroom version, but this was a good start. First time we used rib steak, second time chuck steak with less broth. First time made 6 muffins, 2 texas muffins and 6-5" pies. Second batch made 24 muffin size pies. Recipe adjusted below (original in parens).
6/6/23 Made this on my own with soup meat, using just under 1 kg all in 1 day. Made exactly 6-5" pies. I thought they were fine but MM said not as good.

• 
  3 T olive oil
  
• 1.5 kg chuck steak, cut into 1 cm cubes
• 1 onion, diced - brown, yellow, white or shallots (2)
• 3 garlic cloves, minced
• 2 T tomato paste
• 3 c beef broth (4 c)
• 1 c red wine (dry and dark, not light like pinot noir)
• 2 bay leaves
• 1.5 t salt
• 2 t black pepper*
• 3 T cornstarch*
• 4 T water
• 1 egg yolk, lightly beaten (or whole egg for lighter finish)
• puff pastry
• quiche pastry/shortcrust pastry (1 jumbo circle has 4 5" pies worth)

Day Ahead: Beef filling

1. Heat 1 T olive oil in large pot over high heat. Add layers of beef to sear outside until lightly browned. Remove to bowl and repeat.
2. Lower heat to medium high and add the remaining olive oil. Cook onion and garlic until translucent (~5 min).
3. Return beef to pot and all other filling ingredients EXCEPT cornstarch and water. Mix to combine. 
4. Simmer then lower heat to low/med-low so bubbling super gently. Leave to cook for 2 hours, stirring occasionally. Beef should be very tender.
5. Mix cornstarch with water to make slurry. Pour into pot and mix. Cook for 5 min until sauce thickens.
6. Remove from heat to cool. Season with additional salt and pepper.

Assembly

1. Preheat oven to 180C/350F.
2. Grease muffin tins, silicone cups or 5" pie plates.
3. Cut quiche pastry ~1" bigger than tin/cup. Press into pan leaving overhang/thick edge. Fill to brim with filling.
4. Cut puff pastry to size. Place lid on top of filling and gently press to join the doughs.
5. Slice 3-5 times from center, widening the slits to ensure they stay open.
6. Brush with egg wash.
7. Bake for 20-25 min until dark/deep golden brown.
8. Allow to rest for a few min before turning out to wire rack.
9. Serve warm with tomato sauce (aka Australian for ketchup).