Heat a 4-quart saucepan or Dutch oven over medium-high heat. Add the butter and allow it to melt.
2 tablespoons salted butter
Cook the onion in the butter until soft and translucent, about 5 minutes.
1 onion
Stir in the flour, vegetable stock, milk, and salt and pepper, stirring to combine.
⅓ cup all-purpose flour, 1¾ cups low-sodium vegetable stock, 1 cup milk, Kosher salt and freshly ground black pepper
Allow to simmer until thickened to your liking, about 8 minutes.
Add in the cheddar and beer and stir to combine. The cheese should melt almost immediately. Cook to heat through about 2 more minutes.
15 ounces sharp cheddar cheese, 6 ounces pale ale beer
Serve immediately topped with crumbled feta. Serve with crusty bread. Enjoy!
Crumbled feta cheese, Crusty bread