Preheat the oven to 340°F (170°C).
Place the butter in an 8-inch (20cm) cast-iron skillet and melt over low heat.
Once almost melted, add honey.
Mix to combine.
Add cocoa powder right into the warm melted mixture.
Stir with a whisk until everything is evenly combined and glossy.
Let the mixture cool for 1–2 minutes.
Stir in the salt, vanilla extract and instant coffee powder if used.
Crack the eggs into the skillet one at a time.
Stir well after each addition.
Sprinkle the almond flour into the skillet and fold gently until just combined, don’t overmix.
Smooth the top with your spatula and top with chocolate chips. Place the skillet in the preheated oven.
Bake for 15–17 minutes, the edges should be set and the center soft but not wet.
Remove the skillet from the oven and let it rest for 5-10 minutes.
Top with Greek yogurt, a drizzle of honey and fresh raspberries and dig in right from the skillet.