Begin by greasing a 9x13 baking dish with your choice of butter or non-stick cooking oil. Ensure the dish is evenly coated to prevent sticking.

Preheat your oven to 350°F (175°C) so it's ready for baking later on.

Take a medium skillet and place it over medium heat. Add the softened butter to the skillet and let it melt completely.

Once melted, gradually incorporate the flour into the butter, stirring continuously to create a smooth paste-like mixture.

Sprinkle in the salt and chili powder, infusing the mixture with savory and spicy flavors. Keep stirring the mixture for about a minute until the spices are well integrated and the mixture slightly thickens.

Slowly pour in the lager, ensuring to stir constantly to avoid any clumps from forming. Maintain a steady stirring motion until the lager is fully incorporated and the mixture becomes smooth and homogeneous.

Lower the heat and add the cream cheese to the skillet, allowing it to melt and blend seamlessly into the mixture. Gradually add the shredded Tillamook White Cheddar Cheese, stirring continuously until the cheese melts completely and the mixture turns velvety and creamy.

Transfer the decadent cheese mixture into the prepared baking dish, spreading it out evenly to ensure uniform baking. Place the dish in the preheated oven and let it bake for approximately 10 minutes, or until the cheese is bubbling and golden brown on top.

Once baked to perfection, remove the dish from the oven and let it cool slightly. Serve the tantalizing Mellow Mushroom Beer Cheese while it's still warm, accompanied by an array of dipping options such as tortilla chips, crackers, or fresh vegetables.

Delight in the irresistible combination of creamy cheese infused with the rich flavors of beer and spices, and relish every indulgent bite of this homemade culinary creation!