1. In a 5- to 6-quart pan over medium heat, melt 4 tablespoons butter. Break pasta into 1-inch lengths. Add pasta and rice to butter and stir often until golden, about 8 minutes.
2. Add broth, allspice, and pepper. Bring to a boil over high heat, then cover, reduce heat to low, and simmer until rice is tender to bite, 15 to 20 minutes; stir occasionally.
3. Meanwhile, in an 8- to 10-inch frying pan over medium heat, melt remaining 1 tablespoon butter. Add almonds and stir often until golden, about 5 minutes. Add raisins and stir until they puff, about 2 minutes. Remove from heat.
4. Stir peas, parsley, and lemon juice into rice. Cover and simmer until peas are hot, about 3 minutes. Pour into a serving bowl and sprinkle with nut and raisin mixture.