mc_rebalance_datapack/data/minecraft/recipes/observer.json

{
	"type": "minecraft:crafting_shaped",
	"category": "redstone",
	"key": {
		"#": {"tag": "minecraft:stone_crafting_materials"},
		"Q": {"item": "minecraft:quartz"},
		"R": {"item": "minecraft:redstone"}
	},
	"pattern": [
		"###",
		"RRQ",
		"###"
	],
	"result": {"item": "minecraft:observer"},
	"show_notification": true
}