Amish Cinnamon Bread

Ingredients:

1 cup of softened unsalted butter, divided into two sticks
Two cups of sugar, granulated
two big eggs.
Two cups of buttermilk, or milk spiked with two teaspoons of lemon juice or vinegar
Four cups of all-purpose flour for mixing
Baking soda, 2 tablespoons
Regarding the Cinnamon-Sugar Indulge:

1/3 cup of sugar, granulated
cinnamon, 2 teaspoons
Instructions:

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