Preheat the oven to 350°F (175°C). Line an 8x8-inch baking dish with parchment paper, leaving some overhang for easy removal.
In a mixing bowl, combine the rolled oats, almond flour, brown sugar, salt, and baking powder. Stir until well mixed.
Pour in the melted coconut oil and eggs, and mix until the dry ingredients are fully coated and combined. Press this mixture into the bottom of the prepared baking dish to form a crust.
In another bowl, beat the softened cream cheese until creamy and smooth. Then, add in Greek yogurt, cooled brewed coffee, maple syrup, vanilla extract, and instant coffee granules (if using). Mix until completely combined and smooth.
Pour the cream cheese mixture over the prepared crust, spreading it evenly.
Bake in the preheated oven for 30-35 minutes, or until the center is set and the edges are lightly golden.
Allow the bars to cool in the pan for at least 1 hour, then refrigerate for 3-4 hours to firm up before slicing into squares.
Serve chilled or at room temperature; enjoy your delightful breakfast bars!