Chocolate Peanut Butter Cake for a Crowd

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Ingredients

1 3/4 cups flour (, plain / all purpose)
3/4 cup cocoa powder (, unsweetened (Note 1))
1 1/2 tsp baking powder
1 1/2 tsp baking soda ((bi-carb soda) (Note 2))
2 cups white sugar (or caster/superfine sugar)
1 tsp cooking / kosher salt ((yes, really!))
2 large eggs
1 cup milk ((low or full fat))
1/2 cup vegetable oil (, or other plain flavoured oil like canola, grapeseed, rapeseed, sunflower)
2 tsp vanilla extract
2 tsp instant coffee powder (, OPTIONAL (Note 3))
1 cup boiling water ((makes the chocolate flavour "bloom"))
250g / 2 sticks unsalted butter (, softened)
4 cups (500 g) soft icing sugar / powdered sugar (, sifted (Note 4))
1/2 cup (120 g) smooth peanut butter ((spread, not pure) (Note 5))
1/4 tsp cooking/kosher salt
1 tbsp milk
1/2 cup chocolate chips or melts ((US: semi sweet chips))
2 tbsp cream ((thickened/heavy or pure, not low fat))
3 tbsp peanut butter (, warmed in microwave to make it runny)
120g / 4 oz mini Reece's Peanut Butter Cups
10+ miniature Reece's Peanut Butter Cups (, halved)
1/4 cup salted peanuts (, finely chopped)

As published by RecipeTin Eats.

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