Step 1

Preheat the oven to 350°F (175°C).

Step 2

Warm butter in a frying pan over medium heat. Sauté the onion and garlic together for 5 minutes.

Step 3

Remove the sausage from its casing and add to the pan also. Break apart into smaller pieces and brown all sides evenly, about 8 minutes.

Step 4

While the sausage browns, whisk 10 eggs in a large bowl. Mix in the cheese, thyme, salt, and pepper.

Step 5

Transfer meat to an 8x8-inch (20x20 cm) glass baking or casserole dish. Arrange in a single, even layer on the bottom.

Step 6

Pour the egg mixture over the meat. Gently jiggle or tap the dish so the egg can settle down around the meat.

Step 7

Bake for 20 minutes, until eggs are set and top is golden brown. Let rest 5 minutes before slicing and serving warm.