Preheat the oven to 375°F (190°C). In a large skillet over medium heat, cook the breakfast sausage until it is fully browned and cooked through, breaking it up into crumbles as it cooks. Once cooked, drain the sausage on paper towels to remove excess grease.

Return the drained sausage crumbles from Step 1 to the skillet. Add the cream cheese and sour cream, and heat the mixture over medium-low. Stir regularly until the cream cheese has completely melted and the mixture is creamy and smooth. This creates the rich, cheesy base for the dip.

Stir the garlic powder, finely chopped jalapeños, and shredded Monterey Jack cheese into the sausage and cheese mixture from Step 2. Continue stirring until the cheese is well incorporated and starts to melt. This step brings a gentle heat and extra creaminess to the dip.

Evenly sprinkle the grated Parmesan cheese over the top of the sausage and cheese mixture. Transfer the skillet to the preheated oven and bake for about 15 minutes, or until the dip is hot and bubbly around the edges and the Parmesan topping is golden. I like to check the dip at the 13-minute mark—if the top isn't golden yet, give it a few more minutes.

Remove the skillet from the oven and immediately sprinkle the chopped fresh parsley over the top. Let the dip cool slightly before serving. For an extra pop of flavor and color, I like to use a generous handful of parsley here. Serve the dip warm with your choice of chips, crackers, or sliced vegetables.