Preheat the oven to 350°F. Cut the top off of a round loaf of bread, set the top aside, and hollow out the inside of the bread.
Fill the bread bowl with the feta cheese cubes and cherry tomatoes, pour the olive oil over the filling, and season with oregano, salt, and pepper. Place the bread lid back on the filled bread bowl.
For the garlic butter, mix the melted butter and minced garlic together and brush it over the closed loaf of bread. Wrap the bread bowl in aluminum foil, place it on a baking tray, transfer the baking tray to the oven, and bake at 350°F for 25 minutes. After 25 minutes, remove the aluminum foil and bake for another 10 minutes until golden brown. Meanwhile, boil some water on the stove and cook the pasta until al dente.
Drain the cooked pasta and take the bread bowl out of the oven. Remove the top of the bread bowl and stir in the cooked pasta.