Preheat the oven to 400 degrees.
Spray the casserole dish with cooking spray or oil - set aside.
Cook the bacon until it is crispy - set aside to cool.
Once bacon is cool- crumble & set aside.
Cook the noodles to the package directions - drain & place back in the pot or large bowl.
Add soup, milk, 1/2 of the cheese, drained peas, tuna, bacon & seasonings (onions, garlic, salt & pepper) to the cooked noodles. Stir to combine.
Transfer to the prepared casserole dish & spread into an even layer.
Place the Goldfish crackers in a zip top bag & crunch them into crumbs - sprinkle the crumbs over the casserole in an even layer.
Top with remaining cheese.
Bake for approx 30 minutes - or until golden brown on top & heated all the way through.