Chocolate Valentine Surprise Loaf Cake

INGREDIENTS
10 tablespoons (1 stick + 2 tablespoons) salted butter, at room temperature
1 cup granulated white sugar
1/2 cup 2% or whole plain Greek yogurt
3 large eggs
1 teaspoon vanilla extract
1¼ cups all purpose flour
1/2 cup unsweetened cocoa powder
1/2 teaspoon baking powder
1/2 teaspoon salt
1/2 cup miniature chocolate chips, divided
1 loaf frozen pound cake,, cut into ¾-inch slices
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