1. 1. Preheat the oven to 375°F (190°C).

2. 2. In a large skillet, cook the ground beef until browned. Season with salt and pepper to taste.

3. 3. Add minced garlic and sweet pepper to the skillet and sauté for a few minutes.

4. 4. In a separate pot, boil the yukon gold potatoes until tender. Mash them with greek yogurt until smooth.

5. 5. In a baking dish, layer the cooked ground beef mixture, broccoli florets, and the mashed potato mixture.

6. 6. Bake in the preheated oven for 25-30 minutes, or until the top is golden brown.

7. 7. Serve hot and enjoy!