Making Sausage Breakfast Muffins is easy if you follow these steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C). Prepare a muffin tin by greasing it with cooking spray or lining it with muffin liners.
2. Cook the Sausage: In a skillet over medium heat, cook the breakfast sausage until browned and fully cooked. Drain any excess fat and set aside to cool.
3. Mix Dry Ingredients: In a large bowl, combine the flour, baking powder, salt, and black pepper. Stir until well mixed.
4. Combine Wet Ingredients: In another bowl, whisk together the milk and eggs until well-blended.
5. Mix Ingredients: Gradually add the wet ingredients to the dry ingredients, stirring until just combined. Be careful not to overmix; a few lumps are okay.
6. Add Sausage and Cheese: Fold in the cooked sausage, shredded cheddar cheese, and chopped green onions if using. Mix until evenly distributed.
7. Fill Muffin Tins: Spoon the batter into the prepared muffin tin, filling each cup about ¾ full.
8. Bake: Place the muffin tin in the preheated oven and bake for 20-25 minutes or until the tops are golden brown and a toothpick inserted in the center comes out clean.
9. Cool: Remove the muffins from the oven and let them cool in the pan for about 5 minutes. Then transfer them to a wire rack to cool completely.

These steps will guide you in creating these delightful muffins effortlessly.